function imPopUpWin(sUrl,w,h,cb,sb){
	if (cb=='yes')
		sProp='';
	else {
		if ((w==-1) || (h==-1)) {
			sProp= 'width='+screen.width+',height='+screen.height+',top=0,left=0,scrollbars=no,location=no,directories=no,status=no,menubar=no,toolbar=no,resizable=no';
		} else {
			l=(screen.width)?(screen.width-w)/2:100;
			t=(screen.height)?(screen.height-h)/2:100;
			sProp='width='+ w +',height='+ h +',top='+ t +',left='+ l +',scrollbars='+ sb +',location=no,directories=no,status=no,menubar=no,toolbar=no,resizable=no';
		}
	}
	oWin=window.open(sUrl,'',sProp);
	oWin.focus();
}