function addLoadEvent(func){
				var oldonload=window.onload;
				if(typeof window.onload!='function'){
					window.onload=func;
				}else{
					window.onload=function(){
						if(oldonload){
							oldonload();
						}
						func();
					}
				}
			};
			
			function changeBackground(image){
				document.getElementById('content-wrapper').style.backgroundImage='url('+image+')';
			};
			
			addLoadEvent(function(){
				var bgimage=document.getElementById('bg-image');
				if(bgimage){
					var bgrow=bgimage.getElementsByTagName('a');
					for(var i=0;i<bgrow.length;i++){
						var bgimg=bgrow[i].getElementsByTagName('img')[0];
						if(bgimg){
							bgrow[i].href='javascript:changeBackground(\''+bgimg.src+'\');';
						}
					}
				}
			});