var newWindow = null;

function closeWin() {
    if (newWindow != null) {
        if (!newWindow.closed)
            newWindow.close();
    }
}

function popUpWin(url, type, strWidth, strHeight) {

    closeWin();

    type = type.toLowerCase();

    if (type == "fullscreen") {
        strWidth = screen.availWidth;
        strHeight = screen.availHeight;
    }
    var tools = "";
    if (type == "standard") tools = "resizable,toolbar=yes,location=yes,scrollbars=yes,menubar=yes,width=" + strWidth + ",height=" + strHeight + ",top=0,left=0";
    if (type == "popup") tools = "resizable,toolbar=no,location=yes,scrollbars=yes,menubar=no,width=" + strWidth + ",height=" + strHeight + ",top=0,left=0";
    if (type == "console" || type == "fullscreen") tools = "resizable,toolbar=no,location=no,scrollbars=no,width=" + strWidth + ",height=" + strHeight + ",left=0,top=0";
    newWindow = window.open(url, 'newWin', tools);
    newWindow.focus();
}

function doPopUp(e) {
    //set defaults - if nothing in rel attrib, these will be used
    var t = "standard";
    var w = "780";
    var h = "580";
    //look for parameters
    attribs = this.rel.split(" ");
    if (attribs[1] != null) { t = attribs[1]; }
    if (attribs[2] != null) { w = attribs[2]; }
    if (attribs[3] != null) { h = attribs[3]; }
    //call the popup script
    popUpWin(this.href, t, w, h);
    //cancel the default link action if pop-up activated
    if (window.event) {
        window.event.returnValue = false;
        window.event.cancelBubble = true;
    }
    else if (e) {
        e.stopPropagation();
        e.preventDefault();
    }
}

function findPopUps() {
    var popups = document.getElementsByTagName("a");
    for (i = 0; i < popups.length; i++) {
        if (popups[i].rel.indexOf("popup") != -1) {
            // attach popup behaviour
            popups[i].onclick = doPopUp;
            // add popup indicator
            if (popups[i].rel.indexOf("noicon") == -1) {
                popups[i].style.backgroundImage = "url(pop-up.gif)";
                popups[i].style.backgroundPosition = "0 center";
                popups[i].style.backgroundRepeat = "no-repeat";
                popups[i].style.paddingLeft = "15px";
            }
            // add info to title attribute to alert fact that it's a pop-up window
            popups[i].title = popups[i].title + " [Opens in pop-up window]";
        }
    }
}

addEvent(window, 'load', findPopUps, false);