I have an application that opens a new window on clicking a link. This spawns a page that holds a Java applet. The problem I am having is that clicking the same link reloads the page, which resets the Java application. Is there any way to trap this? Two solutions that would be acceptable are:

1. Allow multiple windows to be opened from the click handler


2. Ignore subsequent requests if the window is already open

Apologies for being a Javascript newbie - it's not really my main thing.

The code attached to the handler is

function launchApplication(l_url, l_windowName)

{

  var l_width = screen.availWidth;

  var l_height = screen.availHeight;



  var l_params = 'status=1' +

                 ',resizable=1' +

                 ',scrollbars=1' +

                 ',width=' + l_width +

                 ',height=' + l_height +

                 ',left=0' +

                 ',top=0';



  winRef = window.open(l_url, l_windowName, l_params);

  winRef.moveTo(0,0);

  winRef.resizeTo(l_width, l_height);

}

EDIT:

Thanks for the replies - I modified the suggestions slightly so that I could have more than one URL opened via the function.

EDIT2:
There is another version of this code at Check for a URL open on another window

var g_urlarray = [];



Array.prototype.has = function(value) {

    var i;

    for (var i in this) {

        if (i === value) {

            return true;

        }

    }

    return false;

};





function launchApplication(l_url, l_windowName)

{

  var l_width = screen.availWidth;

  var l_height = screen.availHeight;

  var winRef;



  var l_params = 'status=1' +

                 ',resizable=1' +

                 ',scrollbars=1' +

                 ',width=' + l_width +

                 ',height=' + l_height +

                 ',left=0' +

         ',top=0';

  if (g_urlarray.has(l_url)) {

    winRef = g_urlarray[l_url];

  }

  alert(winRef);

  if (winRef == null || winRef.closed) {

      winRef = window.open(l_url, l_windowName, l_params);

      winRef.moveTo(0,0);

      winRef.resizeTo(l_width, l_height);

      g_urlarray[l_url] = winRef;

  }

}