/* popup for de footer
*************************************************************************/
function popupWindow(url,width,height){
    // set the width and height of the playlist popup window to be created
    popupWidth = width;
    popupHeight = height;
    popupURL = url;
    // attempt to determine the width and height of the user's current window - default to 800x600
    windowWidth = 800;
    windowHeight = 600;
    try {
        if (self.innerWidth) {
            windowWidth = self.innerWidth;
            windowHeight = self.innerHeight;
        } else if (parent.document.documentElement && parent.document.documentElement.clientWidth) {
            windowWidth = parent.document.documentElement.clientWidth;
            windowHeight = parent.document.documentElement.clientHeight;
        } else if (document.documentElement && document.documentElement.clientWidth) {
            windowWidth = document.documentElement.clientWidth;
            windowHeight = document.documentElement.clientHeight;
        } else if (parent.document.body) {
            windowWidth = parent.document.body.clientWidth;
            windowHeight = parent.document.body.clientHeight;
        } else if (document.body) {
            windowWidth = document.body.clientWidth;
            windowHeight = document.body.clientHeight;
        }
    } catch(err) {
        windowWidth = 800;
        windowHeight = 600;
    }

    // determine the position of our popup window based on the current window size
    popupLeft = (windowWidth/2)-(popupWidth/2);
    popupTop = (windowHeight/2)-(popupHeight/2);

    myUrl = popupURL;
    myTarget = "refPopupWindow";
    myArgs = 'width='+popupWidth+',height='+popupHeight+',location=0,menubar=0,resizable=1,scrollbars=1,status=0,titlebar=1,toolbar=0,hotkeys=0,top='+popupTop+',left='+popupLeft;
    refPopupWindow = window.open( myUrl, myTarget, myArgs );
    refPopupWindow.focus();
}