<!--//
function popupwindow(url,width,height,usescroll) {
	var winleft = (screen.width - width) / 2;
	var wintop = (screen.height - height) / 2;
	popinfo="toolbar=no,location=no,directories=no,status=no,menubar=no,scrollbars="+usescroll+",resizable=no";
	popinfo+=",width="+width;
	popinfo+=",height="+height;
	popinfo+=",top="+wintop;
	popinfo+=",left="+winleft;
	unit=new Date();
	unit=unit.getSeconds()+"_"+unit.getMinutes()+"_"+unit.getHours();
	win = window.open(url,unit,popinfo);
	if (parseInt(navigator.appVersion) >= 4) { win.window.focus(); }
}
//-->