var imgPreview=new Image();

function ImagePreview(name,descr){
   var h=document.documentElement;
	$$("dpreview").display="none";
	$("preview_descr").innerHTML=(descr)?descr:"";
	$$("dpreviewwait").top=Math.round((h.clientHeight-70)/2)+"px";
	$$("dpreviewwait").left=Math.round((h.clientWidth-300)/2)+"px";
	$$("dpreviewwait").display="block";
	$("dpreview").style.backgroundImage="url("+name+")";
	$("preview").src=name;
   imgPreview.src=name;
}

function ImageLoaded(name){
   var d=document.documentElement;
	var h=imgPreview.height,w=imgPreview.width;
	$$("dpreview").height=h+"px";
	$$("dpreview").width=w+"px";
	$$("dpreview").top=Math.round((d.clientHeight-h)/2)+"px";
	$$("dpreview").left=Math.round((d.clientWidth-w)/2)+"px";
	$$("dpreviewwait").display="none";
	$$("dpreview").display="block";
}