function popWin (url,name,w,h,scroll)
{
	// Calculate positioning
	x = screen.width/2 - w/2;
	y = screen.height/2 - h/2;
		
	// Set window string
	winStr = "toolbar=no,location=no,directories=no,status=no,menubar=no,resizable=no,copyhistory=no"
	winStr += ",width=" + w;
	winStr += ",height=" + h;
	winStr += ",left=" + x;
	winStr += ",top=" + y;
	if (scroll) winStr += ",scrollbars=yes";
	else winStr += ",scrollbars=no";
	
	// Pop the window
	window.open(url,name,winStr);
}