function DisplayImage(img,W,h)
{
	var winl=(screen.width-W)/2;
	var wint=(screen.height-(h+60))/2;
	var winw=W+20;
	var winh=h+20;
	window.open(img,'','width='+winw+',height='+winh+',resizable=no,top='+wint+',left='+winl+'')
}

function openwindow(url,W,h)
{
	var winl=(screen.width-W)/2;
	var wint=(screen.height-(h+60))/2;
	var winw=W+20;
	var winh=h+20;
	window.open(url,'','width='+winw+',height='+winh+',resizable=no,top='+wint+',left='+winl+',toolbar=0,menubar=0,scrollbars=0,status=0')
}