function open_port(url, name, w, h) {
	browser = (((navigator.appName == "Netscape") && (parseInt(navigator.appVersion) >= 4 )) || ((navigator.appName == "Microsoft Internet Explorer") && (navigator.appVersion.indexOf("MSIE 5.0") >= 0 )))	
	//window.alert(browser+": appname is "+navigator.appName+", version is "+navigator.appVersion);
	if(!browser)
		{
		popupWin = window.open(url, name, 'scrollbars=no' + ',menubar=no' + ',resize=no' + ',resizable=no' + ',width=720' + w + ',height=590' + h);		
		} else {
			//window.alert("pw: "+typeof(popupWin)+"\n");
			if(typeof(popupWin) == "undefined"){ //brand new window
				popupWin = window.open(url, name, 'scrollbars=no' + ',menubar=no' + ',resize=no' + ',resizable=no' + ',width=720' + w + ',height=590' + h);
				//document.write(istring);
				//popupWin.resizeTo(w,h);
				popupWin.focus();
			} else { 
				//window.alert("pwclosed:"+popupWin.closed+"\n");			
				if(!(popupWin.closed)){ // close current win, open new
					popupWin.close();
				}
				popupWin = window.open(url, name, 'scrollbars=no' + ',menubar=no' + ',resize=no' + ',resizable=no' + ',width=720' + w+ ',height=590' + h);
				//document.write(istring);
				popupWin.focus();
				//popupWin.resizeTo(w,h);
				//popupWin=null;
			}
		}
		
	}


function End(page) 
{
	CloseWin = this.close(page);
}