var backgroundAlpha=0.90;
	var backgroundAnimationInDuration=750;
	var backgroundAnimationOutDuration=250;
	
	function launchLightboxBackground(){
		if(isScrollingDisabled=="true"){
			if($.browser.msie && $.browser.version <= 7){
				var ScrollTop = document.body.scrollTop;
				if (ScrollTop == 0){
					if (window.pageYOffset){
						ScrollTop = window.pageYOffset;
					}else{
						ScrollTop = (document.body.parentElement) ? document.body.parentElement.scrollTop : 0;
					}
				}
				window.onscroll=function(){	scroll(0, ScrollTop); }
			}else{
				$("body").css("overflow", "hidden");
			}
		}
		
		$("body").append("<div id='lightboxBackground'></div>");
		
		$("#lightboxBackground").fadeTo(0, 0);
		
		$("#lightboxBackground").css("z-index", "10000");
	
		$("#lightboxBackground").fadeTo(backgroundAnimationInDuration, backgroundAlpha, lightboxStartFunction);
		
   		$("#lightboxBackground").click(lightboxBackgroundListener);
	}
	
	function lightboxBackgroundListener(){
		lightboxEndFunction();
	}
	
		
	function removeLightboxBackground(){
		$("#lightboxBackground").fadeTo(backgroundAnimationOutDuration, 0, deleteLightboxBackground);
	}
	function deleteLightboxBackground(){
		$("#lightboxBackground").remove();
		
		if(isScrollingDisabled=="true"){
			isScrollingDisabled="false";
			if($.browser.msie && $.browser.version <= 7){
				window.onscroll=function(){	 }
			}else{
				$("body").css("overflow", "auto");
			}
		}
		
		window.location.hash="#_"
	}