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/**
 * Lorem Ipsum Books & Media Store Framework: Utilities
 *
 * @package	lorem_ipsum_books_media_store
 * @since	lorem_ipsum_books_media_store 1.0
 */

/* Global variables manipulations
---------------------------------------------------------------- */

// Global variables storage
if (typeof LOREM_IPSUM_BOOKS_MEDIA_STORE_STORAGE == 'undefined') var LOREM_IPSUM_BOOKS_MEDIA_STORE_STORAGE = {};

// Get global variable
function lorem_ipsum_books_media_store_storage_get(var_name) {
	"use strict";
	return lorem_ipsum_books_media_store_isset(LOREM_IPSUM_BOOKS_MEDIA_STORE_STORAGE[var_name]) ? LOREM_IPSUM_BOOKS_MEDIA_STORE_STORAGE[var_name] : '';
}

// Set global variable
function lorem_ipsum_books_media_store_storage_set(var_name, value) {
	"use strict";
	LOREM_IPSUM_BOOKS_MEDIA_STORE_STORAGE[var_name] = value;
}

// Inc/Dec global variable with specified value
function lorem_ipsum_books_media_store_storage_inc(var_name) {
	"use strict";
	var value = arguments[1]==undefined ? 1 : arguments[1];
	LOREM_IPSUM_BOOKS_MEDIA_STORE_STORAGE[var_name] += value;
}

// Concatenate global variable with specified value
function lorem_ipsum_books_media_store_storage_concat(var_name, value) {
	"use strict";
	LOREM_IPSUM_BOOKS_MEDIA_STORE_STORAGE[var_name] += ''+value;
}

// Get global array element
function lorem_ipsum_books_media_store_storage_get_array(var_name, key) {
	"use strict";
	return lorem_ipsum_books_media_store_isset(LOREM_IPSUM_BOOKS_MEDIA_STORE_STORAGE[var_name][key]) ? LOREM_IPSUM_BOOKS_MEDIA_STORE_STORAGE[var_name][key] : '';
}

// Set global array element
function lorem_ipsum_books_media_store_storage_set_array(var_name, key, value) {
	"use strict";
	if (!lorem_ipsum_books_media_store_isset(LOREM_IPSUM_BOOKS_MEDIA_STORE_STORAGE[var_name])) LOREM_IPSUM_BOOKS_MEDIA_STORE_STORAGE[var_name] = {};
	LOREM_IPSUM_BOOKS_MEDIA_STORE_STORAGE[var_name][key] = value;
}

// Inc/Dec global array element with specified value
function lorem_ipsum_books_media_store_storage_inc_array(var_name, key) {
	"use strict";
	var value = arguments[2]==undefined ? 1 : arguments[2];
	LOREM_IPSUM_BOOKS_MEDIA_STORE_STORAGE[var_name][key] += value;
}

// Concatenate global array element with specified value
function lorem_ipsum_books_media_store_storage_concat_array(var_name, key, value) {
	"use strict";
	LOREM_IPSUM_BOOKS_MEDIA_STORE_STORAGE[var_name][key] += ''+value;
}

/* PHP-style functions
---------------------------------------------------------------- */
function lorem_ipsum_books_media_store_isset(obj) {
	"use strict";
	return typeof(obj) != 'undefined';
}

function lorem_ipsum_books_media_store_empty(obj) {
	"use strict";
	return typeof(obj) == 'undefined' || (typeof(obj)=='object' && obj == null) || (typeof(obj)=='array' && obj.length == 0) || (typeof(obj)=='string' && lorem_ipsum_books_media_store_alltrim(obj)=='') || obj===0;
}

function lorem_ipsum_books_media_store_is_array(obj)  {
	"use strict";
	return typeof(obj)=='array';
}

function lorem_ipsum_books_media_store_is_object(obj)  {
	"use strict";
	return typeof(obj)=='object';
}

function lorem_ipsum_books_media_store_merge_objects(obj1, obj2)  {
	"use strict";
	for (var i in obj2)
		if ( obj2.hasOwnProperty( i ) )
			obj1[i] = obj2[i];
	return obj1;
}

// Generates a storable representation of a value
function lorem_ipsum_books_media_store_serialize(mixed_val) {
	"use strict";
	var obj_to_array = arguments.length==1 || argument[1]===true;

switch (typeof(mixed_val)) {

case "number":
			if (isNaN(mixed_val) || !isFinite(mixed_val))
				return false;
			else
				return (Math.floor(mixed_val) == mixed_val ? "i" : "d") + ":" + mixed_val + ";";

case "string":
			return "s:" + mixed_val.length + ":\"" + mixed_val + "\";";

case "boolean":
			return "b:" + (mixed_val ? "1" : "0") + ";";

case "object":
			if (mixed_val == null)
				return "N;";
			else if (mixed_val instanceof Array) {
				var idxobj = { idx: -1 };
				var map = [];
				for (var i=0; i<mixed_val.length; i++) {
					idxobj.idx++;
					var ser = lorem_ipsum_books_media_store_serialize(mixed_val[i]);
					if (ser)
						map.push(lorem_ipsum_books_media_store_serialize(idxobj.idx) + ser);
				}                                      
				return "a:" + mixed_val.length + ":{" + map.join("") + "}";
			} else {
				var class_name = lorem_ipsum_books_media_store_get_class(mixed_val);
				if (class_name == undefined)
					return false;
				var props = new Array();
				for (var prop in mixed_val) {
					var ser = lorem_ipsum_books_media_store_serialize(mixed_val[prop]);
					if (ser)
						props.push(lorem_ipsum_books_media_store_serialize(prop) + ser);
				}
				if (obj_to_array)
					return "a:" + props.length + ":{" + props.join("") + "}";
				else
					return "O:" + class_name.length + ":\"" + class_name + "\":" + props.length + ":{" + props.join("") + "}";
			}

case "undefined":
			return "N;";
	}
	return false;
}

// Returns the name of the class of an object
function lorem_ipsum_books_media_store_get_class(obj) {
	"use strict";
	if (obj instanceof Object && !(obj instanceof Array) && !(obj instanceof Function) && obj.constructor) {
		var arr = obj.constructor.toString().match(/function\s*(\w+)/);
		if (arr && arr.length == 2) return arr[1];
	}
	return false;
}

/* String functions
---------------------------------------------------------------- */

function lorem_ipsum_books_media_store_ltrim(str) {
	"use strict";
	return lorem_ipsum_books_media_store_alltrim(str, 'l');
}

function lorem_ipsum_books_media_store_rtrim(str) {
	"use strict";
	return lorem_ipsum_books_media_store_alltrim(str, 'r');
}

function lorem_ipsum_books_media_store_padl(str, len) {
	"use strict";
	var ch = arguments[2] ? arguments[2] : ' ';
	var rez = str.substr(0,len);
	if (rez.length < len) {
		for (var i=0; i<len-str.length; i++)
			rez += ch;
	}
	return rez;
}

function lorem_ipsum_books_media_store_padr(str, len) {
	"use strict";
	var ch = arguments[2] ? arguments[2] : ' ';
	var rez = str.substr(0,len);
	if (rez.length < len) {
		for (var i=0; i<len-str.length; i++)
			rez = ch + rez;
	}
	return rez;
}

function lorem_ipsum_books_media_store_padc(str, len) {
	"use strict";
	var ch = arguments[2] ? arguments[2] : ' ';
	var rez = str.substr(0,len);
	if (rez.length < len) {
		for (var i=0; i<Math.floor((len-str.length)/2); i++)
			rez = ch + rez + ch;
	}
	return rez+(rez.length<len ? ch : '');
}

function lorem_ipsum_books_media_store_replicate(str, num) {
	"use strict";
	var rez = '';
	for (var i=0; i<num; i++) {
		rez += str;
	}
	return rez;
}

/* Numbers functions
---------------------------------------------------------------- */

// Round number to specified precision.
function lorem_ipsum_books_media_store_round_number(num) {
	"use strict";
	var precision = arguments[1] ? arguments[1] : 0;
	var p = Math.pow(10, precision);
	return Math.round(num*p)/p;
}

// Clear number from any characters and append it with 0 to desired precision
function lorem_ipsum_books_media_store_clear_number(num) {
	"use strict";
	var precision = arguments[1] ? arguments[1] : 0;
	var defa = arguments[2] ? arguments[2] : 0;
	var res = '';
	var decimals = -1;
	num = ""+num;
	if (num=="") num=""+defa;
	for (var i=0; i<num.length; i++) {
		if (decimals==0) break;
		else if (decimals>0) decimals--;
		var ch = num.substr(i,1);
		if (ch=='.') {
			if (precision>0) {
				res += ch;
			}
			decimals = precision;
		} else if ((ch>=0 && ch<=9) || (ch=='-' && i==0))
			res+=ch;
	}
	if (precision>0 && decimals!=0) {
		if (decimals==-1) {
			res += '.';
			decimals = precision;
		}
		for (i=decimals; i>0; i--)
			res +='0'; 
	}
	return res;
}

// Convert number from decimal to hex
function lorem_ipsum_books_media_store_dec2hex(n) {
	"use strict";
	return Number(n).toString(16);
}

// Convert number from hex to decimal
function lorem_ipsum_books_media_store_hex2dec(hex) {
	"use strict";
	return parseInt(hex,16); 
}

/* Array manipulations
---------------------------------------------------------------- */

/* Date manipulations
---------------------------------------------------------------- */

// Return array[Year, Month, Day, Hours, Minutes, Seconds]
function lorem_ipsum_books_media_store_parse_date(dt) {
	"use strict";
	dt = dt.replace(/\//g, '-').replace(/\./g, '-').replace(/T/g, ' ').split('+')[0];
	var dt2 = dt.split(' ');
	var d = dt2[0].split('-');
	var t = dt2[1].split(':');
	d.push(t[0], t[1], t[2]);
	return d;
}

// Return difference string between two dates
function lorem_ipsum_books_media_store_get_date_difference(dt1) {
	"use strict";
	var dt2 = arguments[1]!==undefined ? arguments[1] : '';
	var short_date = arguments[2]!==undefined ? arguments[2] : true;
	var sec = arguments[3]!==undefined ? arguments[3] : false;
	var a1 = lorem_ipsum_books_media_store_parse_date(dt1);
	dt1 = Date.UTC(a1[0], a1[1], a1[2], a1[3], a1[4], a1[5]);
	if (dt2 == '') {
		dt2 = new Date();
		var a2 = [dt2.getFullYear(), dt2.getMonth()+1, dt2.getDate(), dt2.getHours(), dt2.getMinutes(), dt2.getSeconds()];
	} else
		var a2 = lorem_ipsum_books_media_store_parse_date(dt2);
	dt2 = Date.UTC(a2[0], a2[1], a2[2], a2[3], a2[4], a2[5]);
	var diff = Math.round((dt2 - dt1)/1000);
	var days = Math.floor(diff / (24*3600));
	diff -= days * 24 * 3600;
	var hours = Math.floor(diff / 3600);
	diff -= hours * 3600;
	var minutes = Math.floor(diff / 60);
	diff -= minutes * 60;
	var rez = '';
	if (days > 0)
		rez += (rez!='' ? ' ' : '') + days + ' day' + (days > 1 ? 's' : '');
	if ((!short_date || rez=='') && hours > 0)
		rez += (rez!='' ? ' ' : '') + hours + ' hour' + (hours > 1 ? 's' : '');
	if ((!short_date || rez=='') && minutes > 0)
		rez +=  (rez!='' ? ' ' : '') + minutes + ' minute' + (minutes > 1 ? 's' : '');
	if (sec || rez=='')
		rez +=  rez!='' || sec ? (' ' + diff + ' second' + (diff > 1 ? 's' : '')) : 'less then minute';
	return rez;
}

/* Colors functions
---------------------------------------------------------------- */

function lorem_ipsum_books_media_store_hex2rgb(hex) {
    "use strict";
	hex = parseInt(((hex.indexOf('#') > -1) ? hex.substring(1) : hex), 16);
	return {r: hex >> 16, g: (hex & 0x00FF00) >> 8, b: (hex & 0x0000FF)};
}

function lorem_ipsum_books_media_store_components2hex(r,g,b) {
	"use strict";
	return '#'+
		Number(r).toString(16).toUpperCase().replace(/^(.)$/,'0$1') +
		Number(g).toString(16).toUpperCase().replace(/^(.)$/,'0$1') +
		Number(b).toString(16).toUpperCase().replace(/^(.)$/,'0$1');
}

function lorem_ipsum_books_media_store_hex2hsb(hex) {
	"use strict";
	return lorem_ipsum_books_media_store_rgb2hsb(lorem_ipsum_books_media_store_hex2rgb(hex));
}

function lorem_ipsum_books_media_store_hsb2hex(hsb) {
	"use strict";
	var rgb = lorem_ipsum_books_media_store_hsb2rgb(hsb);
	return lorem_ipsum_books_media_store_components2hex(rgb.r, rgb.g, rgb.b);
}

function lorem_ipsum_books_media_store_rgb2hsb(rgb) {
	"use strict";
	var hsb = {};
	hsb.b = Math.max(Math.max(rgb.r,rgb.g),rgb.b);
	hsb.s = (hsb.b <= 0) ? 0 : Math.round(100*(hsb.b - Math.min(Math.min(rgb.r,rgb.g),rgb.b))/hsb.b);
	hsb.b = Math.round((hsb.b /255)*100);
	if ((rgb.r==rgb.g) && (rgb.g==rgb.b))  hsb.h = 0;
	else if (rgb.r>=rgb.g && rgb.g>=rgb.b) hsb.h = 60*(rgb.g-rgb.b)/(rgb.r-rgb.b);
	else if (rgb.g>=rgb.r && rgb.r>=rgb.b) hsb.h = 60  + 60*(rgb.g-rgb.r)/(rgb.g-rgb.b);
	else if (rgb.g>=rgb.b && rgb.b>=rgb.r) hsb.h = 120 + 60*(rgb.b-rgb.r)/(rgb.g-rgb.r);
	else if (rgb.b>=rgb.g && rgb.g>=rgb.r) hsb.h = 180 + 60*(rgb.b-rgb.g)/(rgb.b-rgb.r);
	else if (rgb.b>=rgb.r && rgb.r>=rgb.g) hsb.h = 240 + 60*(rgb.r-rgb.g)/(rgb.b-rgb.g);
	else if (rgb.r>=rgb.b && rgb.b>=rgb.g) hsb.h = 300 + 60*(rgb.r-rgb.b)/(rgb.r-rgb.g);
	else 								   hsb.h = 0;
	hsb.h = Math.round(hsb.h);
	return hsb;
}

function lorem_ipsum_books_media_store_color_picker(){
	"use strict";
	var id = arguments[0] ? arguments[0] : "iColorPicker"+Math.round(Math.random()*1000);
	var colors = arguments[1] ? arguments[1] : 
	'#f00,#ff0,#0f0,#0ff,#00f,#f0f,#fff,#ebebeb,#e1e1e1,#d7d7d7,#cccccc,#c2c2c2,#b7b7b7,#acacac,#a0a0a0,#959595,'
	+'#ee1d24,#fff100,#00a650,#00aeef,#2f3192,#ed008c,#898989,#7d7d7d,#707070,#626262,#555,#464646,#363636,#262626,#111,#000,'
	+'#f7977a,#fbad82,#fdc68c,#fff799,#c6df9c,#a4d49d,#81ca9d,#7bcdc9,#6ccff7,#7ca6d8,#8293ca,#8881be,#a286bd,#bc8cbf,#f49bc1,#f5999d,'
	+'#f16c4d,#f68e54,#fbaf5a,#fff467,#acd372,#7dc473,#39b778,#16bcb4,#00bff3,#438ccb,#5573b7,#5e5ca7,#855fa8,#a763a9,#ef6ea8,#f16d7e,'
	+'#ee1d24,#f16522,#f7941d,#fff100,#8fc63d,#37b44a,#00a650,#00a99e,#00aeef,#0072bc,#0054a5,#2f3192,#652c91,#91278f,#ed008c,#ee105a,'
	+'#9d0a0f,#a1410d,#a36209,#aba000,#588528,#197b30,#007236,#00736a,#0076a4,#004a80,#003370,#1d1363,#450e61,#62055f,#9e005c,#9d0039,'
	+'#790000,#7b3000,#7c4900,#827a00,#3e6617,#045f20,#005824,#005951,#005b7e,#003562,#002056,#0c004b,#30004a,#4b0048,#7a0045,#7a0026';
	var colorsList = colors.split(',');
	var tbl = '<table class="colorPickerTable"><thead>';
	for (var i=0; i<colorsList.length; i++) {
		if (i%16==0) tbl += (i>0 ? '</tr>' : '') + '<tr>';
		tbl += '<td style="background-color:'+colorsList[i]+'"> </td>';
	}
	tbl += '</tr></thead><tbody>'
		+ '<tr style="height:60px;">'
		+ '<td colspan="8" id="'+id+'_colorPreview" style="vertical-align:middle;text-align:center;border:1px solid #000;background:#fff;">'
		+ '<input style="width:55px;color:#000;border:1px solid rgb(0, 0, 0);padding:5px;background-color:#fff;font:11px Arial, Helvetica, sans-serif;" maxlength="7" />'
		+ '<a href="#" id="'+id+'_moreColors" class="iColorPicker_moreColors"></a>'
		+ '</td>'
		+ '<td colspan="8" id="'+id+'_colorOriginal" style="vertical-align:middle;text-align:center;border:1px solid #000;background:#fff;">'
		+ '<input style="width:55px;color:#000;border:1px solid rgb(0, 0, 0);padding:5px;background-color:#fff;font:11px Arial, Helvetica, sans-serif;" readonly="readonly" />'
		+ '</td>'
		+ '</tr></tbody></table>';

jQuery(document.createElement("div"))
		.attr("id", id)
		.css('display','none')
		.html(tbl)
		.appendTo("body")
		.addClass("iColorPickerTable")
		.on('mouseover', 'thead td', function(){
			"use strict";
			var aaa = lorem_ipsum_books_media_store_rgb2hex(jQuery(this).css('background-color'));
			jQuery('#'+id+'_colorPreview').css('background',aaa);
			jQuery('#'+id+'_colorPreview input').val(aaa);
		})
		.on('keypress', '#'+id+'_colorPreview input', function(key){
			"use strict";
			var aaa = jQuery(this).val()
			if (aaa.length<7 && ((key.which>=48 && key.which<=57) || (key.which>=97 && key.which<=102) || (key.which===35 || aaa.length===0))) {
				aaa += String.fromCharCode(key.which);
			} else if (key.which == 8 && aaa.length>0) {
				aaa = aaa.substring(0, aaa.length-1);
			} else if (key.which===13 && (aaa.length===4 || aaa.length===7)) {
				var fld  = jQuery('#'+id).data('field');
				var func = jQuery('#'+id).data('func');
				if (func!=null && func!='undefined') {
					func(fld, aaa);
				} else {
					fld.val(aaa).css('backgroundColor', aaa).trigger('change');
				}
				jQuery('#'+id+'_Bg').fadeOut(500);
				jQuery('#'+id).fadeOut(500);
				
			} else {
				key.preventDefault();
				return false;
			}
			if (aaa.substr(0,1)==='#' && (aaa.length===4 || aaa.length===7)) {
				jQuery('#'+id+'_colorPreview').css('background',aaa);
			}
		})
		.on('click', 'thead td', function(e){
			"use strict";
			var fld  = jQuery('#'+id).data('field');
			var func = jQuery('#'+id).data('func');
			var aaa  = lorem_ipsum_books_media_store_rgb2hex(jQuery(this).css('background-color'));
			if (func!=null && func!='undefined') {
				func(fld, aaa);
			} else {
				fld.val(aaa).css('backgroundColor', aaa).trigger('change');
			}
			jQuery('#'+id+'_Bg').fadeOut(500);
			jQuery('#'+id).fadeOut(500);
			e.preventDefault();
			return false;
		})
		.on('click', 'tbody .iColorPicker_moreColors', function(e){
			"use strict";
			var thead  = jQuery(this).parents('table').find('thead');
			var out = '';
			if (thead.hasClass('more_colors')) {
				for (var i=0; i<colorsList.length; i++) {
					if (i%16==0) out += (i>0 ? '</tr>' : '') + '<tr>';
					out += '<td style="background-color:'+colorsList[i]+'"> </td>';
				}
				thead.removeClass('more_colors').empty().html(out+'</tr>');
				jQuery('#'+id+'_colorPreview').attr('colspan', 8);
				jQuery('#'+id+'_colorOriginal').attr('colspan', 8);
			} else {
				var rgb=[0,0,0], i=0, j=-1;	// Set j=-1 or j=0 - show 2 different colors layouts
				while (rgb[0]<0xF || rgb[1]<0xF || rgb[2]<0xF) {
					if (i%18==0) out += (i>0 ? '</tr>' : '') + '<tr>';
					i++;
					out += '<td style="background-color:'+lorem_ipsum_books_media_store_components2hex(rgb[0]*16+rgb[0],rgb[1]*16+rgb[1],rgb[2]*16+rgb[2])+'"> </td>';
					rgb[2]+=3;
					if (rgb[2]>0xF) {
						rgb[1]+=3;
						if (rgb[1]>(j===0 ? 6 : 0xF)) {
							rgb[0]+=3;
							if (rgb[0]>0xF) {
								if (j===0) {
									j=1;
									rgb[0]=0;
									rgb[1]=9;
									rgb[2]=0;
								} else {
									break;
								}
							} else {
								rgb[1]=(j < 1 ? 0 : 9);
								rgb[2]=0;
							}
						} else {
							rgb[2]=0;
						}
					}
				}
				thead.addClass('more_colors').empty().html(out+'<td  style="background-color:#ffffff" colspan="8"> </td></tr>');
				jQuery('#'+id+'_colorPreview').attr('colspan', 9);
				jQuery('#'+id+'_colorOriginal').attr('colspan', 9);
			}
			jQuery('#'+id+' table.colorPickerTable thead td')
				.css({
					'width':'12px',
					'height':'14px',
					'border':'1px solid #000',
					'cursor':'pointer'
				});
			e.preventDefault();
			return false;
		});
	jQuery(document.createElement("div"))
		.attr("id", id+"_Bg")
		.on('click', function(e) {
			"use strict";
			jQuery("#"+id+"_Bg").fadeOut(500);
			jQuery("#"+id).fadeOut(500);
			e.preventDefault();
			return false;
		})
		.appendTo("body");
	jQuery('#'+id+' table.colorPickerTable thead td')
		.css({
			'width':'12px',
			'height':'14px',
			'border':'1px solid #000',
			'cursor':'pointer'
		});
	jQuery('#'+id+' table.colorPickerTable')
		.css({'border-collapse':'collapse'});
	jQuery('#'+id)
		.css({
			'border':'1px solid #ccc',
			'background':'#333',
			'padding':'5px',
			'color':'#fff',
			'z-index':999999
		});
	jQuery('#'+id+'_colorPreview')
		.css({'height':'50px'});
	return id;
}

/* Cookies manipulations
---------------------------------------------------------------- */

function lorem_ipsum_books_media_store_get_cookie(name) {
	"use strict";
	var defa = arguments[1]!=undefined ? arguments[1] : null;
	var start = document.cookie.indexOf(name + '=');
	var len = start + name.length + 1;
	if ((!start) && (name != document.cookie.substring(0, name.length))) {
		return defa;
	}
	if (start == -1)
		return defa;
	var end = document.cookie.indexOf(';', len);
	if (end == -1)
		end = document.cookie.length;
	return unescape(document.cookie.substring(len, end));
}

function lorem_ipsum_books_media_store_set_cookie(name, value, expires, path, domain, secure) {
	"use strict";
	var expires = arguments[2]!=undefined ? arguments[2] : 0;
	var path    = arguments[3]!=undefined ? arguments[3] : '/';
	var domain  = arguments[4]!=undefined ? arguments[4] : '';
	var secure  = arguments[5]!=undefined ? arguments[5] : '';
	var today = new Date();
	today.setTime(today.getTime());
	if (expires) {
		expires = expires * 1000 * 60 * 60 * 24;
	}
	var expires_date = new Date(today.getTime() + (expires));
	document.cookie = name + '='
			+ escape(value)
			+ ((expires) ? ';expires=' + expires_date.toGMTString() : '')
			+ ((path)    ? ';path=' + path : '')
			+ ((domain)  ? ';domain=' + domain : '')
			+ ((secure)  ? ';secure' : '');
}

function lorem_ipsum_books_media_store_del_cookie(name, path, domain) {
	"use strict";
	var path   = arguments[1]!=undefined ? arguments[1] : '/';
	var domain = arguments[2]!=undefined ? arguments[2] : '';
	if (lorem_ipsum_books_media_store_get_cookie(name))
		document.cookie = name + '=' + ((path) ? ';path=' + path : '')
				+ ((domain) ? ';domain=' + domain : '')
				+ ';expires=Thu, 01-Jan-1970 00:00:01 GMT';
}

/* ListBox and ComboBox manipulations
---------------------------------------------------------------- */

function lorem_ipsum_books_media_store_clear_listbox(box) {
	"use strict";
	for (var i=box.options.length-1; i>=0; i--)
		box.options[i] = null;
}

function lorem_ipsum_books_media_store_add_listbox_item(box, val, text) {
	"use strict";
	var item = new Option();
	item.value = val;
	item.text = text;
    box.options.add(item);
}

function lorem_ipsum_books_media_store_select_listbox_item_by_value(box, val) {
	"use strict";
	for (var i = 0; i < box.options.length; i++) {
		box.options[i].selected = (val == box.options[i].value);
	}
}

function lorem_ipsum_books_media_store_select_listbox_item_by_text(box, txt) {
	"use strict";
	for (var i = 0; i < box.options.length; i++) {
		box.options[i].selected = (txt == box.options[i].text);
	}
}

function lorem_ipsum_books_media_store_get_listbox_values(box) {
	"use strict";
	var delim = arguments[1] ? arguments[1] : ',';
	var str = '';
	for (var i=0; i<box.options.length; i++) {
		str += (str ? delim : '') + box.options[i].value;
	}
	return str;
}

function lorem_ipsum_books_media_store_get_listbox_texts(box) {
	"use strict";
	var delim = arguments[1] ? arguments[1] : ',';
	var str = '';
	for (var i=0; i<box.options.length; i++) {
		str += (str ? delim : '') + box.options[i].text;
	}
	return str;
}

function lorem_ipsum_books_media_store_get_listbox_selected_index(box) {
	"use strict";
	for (var i = 0; i < box.options.length; i++) {
		if (box.options[i].selected)
			return i;
	}
	return -1;
}

/* Radio buttons manipulations
---------------------------------------------------------------- */

function lorem_ipsum_books_media_store_get_radio_value(radioGroupObj) {
	"use strict";
	for (var i=0; i < radioGroupObj.length; i++)
		if (radioGroupObj[i].checked) return radioGroupObj[i].value;
	return null;
}

function lorem_ipsum_books_media_store_set_radio_checked_by_num(radioGroupObj, num) {
	"use strict";
	for (var i=0; i < radioGroupObj.length; i++)
		if (radioGroupObj[i].checked && i!=num) radioGroupObj[i].checked=false;
		else if (i==num) radioGroupObj[i].checked=true;
}

function lorem_ipsum_books_media_store_set_radio_checked_by_value(radioGroupObj, val) {
	"use strict";
	for (var i=0; i < radioGroupObj.length; i++)
		if (radioGroupObj[i].checked && radioGroupObj[i].value!=val) radioGroupObj[i].checked=false;
		else if (radioGroupObj[i].value==val) radioGroupObj[i].checked=true;
}

/* Form manipulations
---------------------------------------------------------------- */

/* Document manipulations
---------------------------------------------------------------- */

// Animated scroll to selected id
function lorem_ipsum_books_media_store_document_animate_to(id) {
	"use strict";
	if (id.indexOf('#')==-1) id = '#' + id;
	var obj = jQuery(id).eq(0);
	if (obj.length == 0) return;
	var oft = jQuery(id).offset().top;
	var st  = jQuery(window).scrollTop();
	var speed = Math.min(1600, Math.max(400, Math.round(Math.abs(oft-st) / jQuery(window).height() * 100)));
	jQuery('body,html').animate( {scrollTop: oft - jQuery('#wpadminbar').height() - jQuery('header.fixedTopMenu .topWrap').height()}, speed, 'swing');
}

// Change browser address without reload page
function lorem_ipsum_books_media_store_document_set_location(curLoc){
	"use strict";
	try {
		history.pushState(null, null, curLoc);
		return;
	} catch(e) {}
	location.href = curLoc;
}

// Add hidden elements init functions after tab, accordion, toggles activate
function lorem_ipsum_books_media_store_add_hidden_elements_handler(key, handler) {    
	"use strict";
	lorem_ipsum_books_media_store_storage_set_array('init_hidden_elements', key, handler);
}

// Init hidden elements after tab, accordion, toggles activate
function lorem_ipsum_books_media_store_init_hidden_elements(cont) {
	"use strict";
	if (LOREM_IPSUM_BOOKS_MEDIA_STORE_STORAGE['init_hidden_elements']) {
		for (var key in LOREM_IPSUM_BOOKS_MEDIA_STORE_STORAGE['init_hidden_elements']) {
			LOREM_IPSUM_BOOKS_MEDIA_STORE_STORAGE['init_hidden_elements'][key](cont);
		}
	}
}

/* Browsers detection
---------------------------------------------------------------- */

/* Files functions
---------------------------------------------------------------- */

function lorem_ipsum_books_media_store_get_file_name(path) {
	"use strict";
	path = path.replace(/\\/g, '/');
	var pos = path.lastIndexOf('/');
	if (pos >= 0)
		path = path.substr(pos+1);
	return path;
}

function lorem_ipsum_books_media_store_get_file_ext(path) {
	"use strict";
	var pos = path.lastIndexOf('.');
	path = pos >= 0 ? path.substr(pos+1) : '';
	return path;
}

/* Images functions
---------------------------------------------------------------- */

// Return true, if all images in the specified container are loaded
function lorem_ipsum_books_media_store_check_images_complete(cont) {
	"use strict";
	var complete = true;
	cont.find('img').each(function() {
		if (!complete) return;
		if (!jQuery(this).get(0).complete) complete = false;
	});
	return complete;
}