<!--
var popupwindow=null;
function popup(url,popwidth,popheight,center){
xposition=0; yposition=0;
if ((parseInt(navigator.appVersion) >= 4 ) && (center)) {
	     xposition = (screen.width - popwidth) / 2;
	     yposition = (screen.height - popheight) / 2;
//	alert("popwidth=" +popwidth);
	}
//	alert("popwidth=" +popwidth);
//	alert("popheight=" +popheight);
//	alert("xposition=" +xposition);
//	alert("yposition=" +yposition);
	args = "width=" +popwidth+  "," + "height=" +popheight+ "," + "location=0," + "menubar=0," + "resizable=no," + "scrollbars=no," + "status=no," + "toolbar=no,";
	if (window.navigator.appName == "Netscape"){ 
		args = args + "screenx=" + xposition + "," + "screeny=" + yposition; }
	else	{ 
		args = args + "left=" + xposition + "," + "top=" + yposition; } 
//	alert("value of args=" +args);
//	if (popheight == undefined) { popheight = 540 }
//        if (popwidth == undefined) { popwidth  = 480 }
//       popupwindow = window.open(url,'popupwindow','scrollbars=no,resizable=no,status=no,toolbar=no,width='+popwidth+',height='+popheight);
 	popupwindow = window.open(url,'popupwindow',args);
        popupwindow.focus();
}
// -->