// the functions in this file require the supplementary library hslib.js

// Check browser variables 

bName = navigator.appName;
bVer = parseInt(navigator.appVersion);

// Determine which browser is being used

if (bName == "Netscape" && bVer >= 3) br = "n3";
else if (bName == "Microsoft Internet Explorer" && bVer >= 4) br = "n3";
else br = "n2";

// These defaults should be changed the way it best fits your site
var _POPUP_FEATURES = 'toolbar=0,location=0,directories=0,statusbar=0,menubar=0,scrollbars=1,resizable=0,width=616,height=416';

function raw_popup(url, target, features) {
    // pops up a window containing url optionally named target, optionally having features
    if (isUndefined(features)) features = _POPUP_FEATURES;
    if (isUndefined(target  )) target   = '_blank';
    var theWindow = window.open(url, target, features);
    theWindow.focus();
    return theWindow;
}

function link_popup(src, features) {
    // to be used in an html event handler as in: <a href="..." onclick="link_popup(this,...)" ...
    // pops up a window grabbing the url from the event source's href
    return raw_popup(src.getAttribute('href'), src.getAttribute('target') || '_blank', features);
}

function event_popup(e) {
    // to be passed as an event listener
    // pops up a window grabbing the url from the event source's href
    link_popup(e.currentTarget);
    e.preventDefault();
}

function event_popup_features(features) {
    // generates an event listener similar to event_popup, but allowing window features
    return function(e) { link_popup(e.currentTarget, features); e.preventDefault() }
}