function popWin(img, varW, varH)
{
	
//	var Width = 850;
//	var Height = 500;
	var screenWidth = screen.availWidth;
	var screenHeight = screen.availHeight;
	var Left = Math.round((screenWidth - varW) / 2);
	var Top = Math.round((screenHeight - varH) /2);
	
	window.open(img,'_blank','scrollbars=no,resizable=0,width='+varW+',height='+varH+',left=' + Left +',top=' + Top);
	 
}