function myOpener(URL,id,w,h)
{
	var xwidth;
	var xheight;
	xwidth = (window.screen.width/2) - ((w/2) + 10);
	xheight = (window.screen.height/2) - ((h/2) + 25);
	
	eval("page" + id + " = window.open(URL, '" + id + "', 'toolbar=0,scrollbars=yes,location=0,statusbar=yes,menubar=yes,resizable=1,width=" + w + ",height=" + h + ",screenX=50,screenY=50,top=" + xheight + ",left="+xwidth+"');");
}


function popup(URL,id,w,h) 
{
	myOpener(URL,id,w,h);
	eval("page"+id+".focus()");
}

 
function closePopup(id)
{
	myOpener('',id,1,1);
	window.focus();
	eval("page" + id+".close()");
}