function openPrintWindow(url,winname,myWidth,myHeight) {
//////////////////////////////////////////////////////
    var myLeft;
	var myTop;

	myLeft = (screen.availWidth-myWidth)/2;
	myTop = (screen.availHeight-myHeight)/2;

    WinAtts='toolbar=no,location=no,directories=no,status=yes,menubar=yes,scrollbars=yes'
    WinAtts+=',resizable=yes,copyhistory=no,alwaysRaised=yes,width='+myWidth+',height='+myHeight
    WinAtts+=',screenX='+myLeft+',screenY='+myTop+',left='+myLeft+',top='+myTop

    window.open(url,winname,WinAtts)
}