function fadediv(idname){
var h = $('mainbody').getHeight();
var offsetY = 0;
	//IE
	if(!window.pageYOffset){
		//strict mode
		if(!(document.documentElement.scrollTop == 0)){
			offsetY = document.documentElement.scrollTop;
		}//quirks mode
		else{
		offsetY = document.body.scrollTop;
		}
	}//w3c
	else{
	offsetY = window.pageYOffset;
	}
	
var wh  = document.viewport.getHeight();

h=h+offsetY;
//alert(offsetY);
if (h<wh){
h=wh;
}
//alert(ww);

var fadeback = document.createElement("div");
fadeback.id=idname;
fadeback.setAttribute('id',idname);
fadeback.style.background = "url(../images/fade.png)";
fadeback.style.position = "absolute";
fadeback.style.top = "0px";
fadeback.style.left = "0px";
fadeback.style.width = 100 + "%";
fadeback.style.height = h + "px";
fadeback.style.zIndex = "1000000";
fadeback.style.margin = "auto";
document.body.appendChild(fadeback);
}

function popupdiv(x,y,v,idname,back)
{

var h = 0;
//IE
if(!window.innerWidth)
{
//strict mode
	if(!(document.documentElement.clientWidth == 0))
	{
	h = document.documentElement.clientHeight;
	}
	//quirks mode
	else
	{
	h = document.body.clientHeight;
	}
}
//w3c
else
{
	h = window.innerHeight;
}
//alert(h);
//var v=0;
if (v==0){
	var offsetY = 0;
	//IE
	if(!window.pageYOffset){
		//strict mode
		if(!(document.documentElement.scrollTop == 0)){
			offsetY = document.documentElement.scrollTop;
		}//quirks mode
		else{
		offsetY = document.body.scrollTop;
		}
	}//w3c
	else{
	offsetY = window.pageYOffset;
	}
	var top=((h-y)/2)+offsetY;
	
}else{
var top=v;
}
var div = document.createElement("div");
div.id=idname;
div.setAttribute('id',idname);
div.style.position = "relative";
div.style.topmargin = "100";
div.style.margin = "auto";
div.style.top = top + "px";
div.style.width = x + "px";
div.style.height = y + "px";
//div.style.background = "#ffffff";
div.style.zIndex = "1100000";
var fadeback = $(back);
fadeback.appendChild(div);
}

function closepreview()
{
var obj=$('fadeback');
obj.parentNode.removeChild(obj);

	var FeaturedBook=$('FeaturedBook');
	
	if (FeaturedBook){
		FeaturedBook.style.display="block";
	}	
//$('fadeback').remove();
//$('preview').remove();
}