function winPopupPreview(tVar)
{       
sWidth = screen.width;
sHeight = screen.height;
xValue = Math.round((sWidth-380)/2);
yValue =  Math.round((sHeight-260)/2);
newWindow = window.open(tVar,"window2","toolbar=no,location=no,menubar=no,directories=no,status=no,scrollbars=no,height=260,width=380,titlebar=yes,screenX="+xValue+",screenY="+yValue+",top="+yValue+",left="+xValue+",resizable=no");
newWindow.creator=self
newWindow.focus();
}

function winPopupScroll(tVar)
{       
sWidth = screen.width;
sHeight = screen.height;
xValue = Math.round((sWidth-672)/2);
yValue =  Math.round((sHeight-480)/2);
newWindow = window.open(tVar,"window1","toolbar=no,location=no,menubar=no,directories=no,status=no,scrollbars=yes,height=480,width=672,titlebar=no,screenX="+xValue+",screenY="+yValue+",top="+yValue+",left="+xValue+",resizable=no");
newWindow.creator=self
newWindow.focus();
}