$(document).ready(function(){
	initTheme();
	themeListener();	
});

function randomColor(){
   	var randInt=Math.floor(Math.random()*4);   	   
   	var colorArr=new Array(4)
	colorArr[0]="blue";
	colorArr[1]="burgundy";
	colorArr[2]="green";   
	colorArr[3]="orange";  
   	return colorArr[randInt];
}

function initTheme(){
	_cookieColor = getCookie('theme');
	if(_cookieColor==null || _cookieColor=="") _cookieColor=randomColor();
	changeTheme(_cookieColor);
}

function themeListener(){
	var _colors = $('#colorpicker li a');
	
	_colors.click(
	function(){
		_selectedColor = $(this).attr('class');	
		changeTheme(_selectedColor);
	});
}

function changeTheme(color){
	var _page = $('body');	
	_selectedColor = color;		
	_page.removeClass('bg-blue').css('background-image','none');
	_page.removeClass('bg-burgundy').css('background-image','none');
	_page.removeClass('bg-green').css('background-image','none');
	_page.removeClass('bg-orange').css('background-image','none');
	_page.addClass('bg-'+_selectedColor).css('background-image','');
	setCookie('theme', _selectedColor, 365);
}

function setCookie(c_name,value,expiredays)
{
var exdate=new Date();
exdate.setDate(exdate.getDate()+expiredays);
document.cookie=c_name+ "=" +escape(value)+
((expiredays==null) ? "" : ";expires="+exdate.toGMTString())+"; path=/";
}

function getCookie(c_name)
{
if (document.cookie.length>0)
  {
  c_start=document.cookie.indexOf(c_name + "=");
  if (c_start!=-1)
    {
    c_start=c_start + c_name.length+1;
    c_end=document.cookie.indexOf(";",c_start);
    if (c_end==-1) c_end=document.cookie.length;
    return unescape(document.cookie.substring(c_start,c_end));
    }
  }
return "";
}