//
// General Javascript utility functions not specific to PalomaWeb.
//

// insertAdjacentHTML(), insertAdjacentText() and insertAdjacentElement()
// for Netscape 6/Mozilla by Thor Larholm me@jscript.3dk
// Usage: include this code segment at the beginning of your document
// before any other Javascript contents.
if(typeof HTMLElement!="undefined" && !  HTMLElement.prototype.insertAdjacentElement){
    HTMLElement.prototype.insertAdjacentElement = function(where,parsedNode) {
        switch (where){
        case 'beforeBegin':
            this.parentNode.insertBefore(parsedNode,this)
            break;
        case 'afterBegin':
            this.insertBefore(parsedNode,this.firstChild);
            break;
        case 'beforeEnd':
            this.appendChild(parsedNode);
            break;
        case 'afterEnd':
            if (this.nextSibling) 
                this.parentNode.insertBefore(parsedNode,this.nextSibling);
            else 
                this.parentNode.appendChild(parsedNode);
            break;
        }
    }

    HTMLElement.prototype.insertAdjacentHTML = function(where,htmlStr) {
        var r = this.ownerDocument.createRange();
        r.setStartBefore(this);
        var parsedHTML = r.createContextualFragment(htmlStr);
        this.insertAdjacentElement(where,parsedHTML)
    }

    HTMLElement.prototype.insertAdjacentText = function(where,txtStr) {
        var parsedText = document.createTextNode(txtStr)
        this.insertAdjacentElement(where,parsedText)
    }
}

/**
 * COMMON DHTML FUNCTIONS
 * These are handy functions I use all the time.
 *
 * By Seth Banks (webmaster at subimage dot com)
 * http://www.subimage.com/
 *
 * Up to date code can be found at http://www.subimage.com/dhtml/
 *
 * This code is free for you to use anywhere, just keep this comment block.
 */

/**
 * X-browser event handler attachment and detachment
 * TH: Switched first true to false per http://www.onlinetools.org/articles/unobtrusivejavascript/chapter4.html
 *
 * @argument obj - the object to attach event to
 * @argument evType - name of the event - DONT ADD "on", pass only "mouseover", etc
 * @argument fn - function to call
 */
function addEvent(obj, evType, fn){
    if (obj.addEventListener){
        obj.addEventListener(evType, fn, false);
        return true;
    } 
    else if (obj.attachEvent){
        var r = obj.attachEvent("on"+evType, fn);
        return r;
    } 
    else {
        return false;
    }
}

function removeEvent(obj, evType, fn, useCapture){
    if (obj.removeEventListener){
        obj.removeEventListener(evType, fn, useCapture);
        return true;
    } 
    else if (obj.detachEvent){
        var r = obj.detachEvent("on"+evType, fn);
        return r;
    } 
    else {
        alert("Handler could not be removed");
    }
}

/**
 * Code below taken from - http://www.evolt.org/article/document_body_doctype_switching_and_more/17/30655/
 *
 * Modified 4/22/04 to work with Opera/Moz (by webmaster at subimage dot com)
 *
 * Gets the full width/height because it's different for most browsers.
 */
function getViewportHeight() {
    if (window.innerHeight!=window.undefined) 
        return window.innerHeight;
    if (document.compatMode=='CSS1Compat') 
        return document.documentElement.clientHeight;
    if (document.body) 
        return document.body.clientHeight; 
    return window.undefined; 
}

function getViewportWidth() {
    if (window.innerWidth!=window.undefined) 
        return window.innerWidth; 
    if (document.compatMode=='CSS1Compat') 
        return document.documentElement.clientWidth; 
    if (document.body) 
        return document.body.clientWidth; 
    return window.undefined; 
}