/************************************************************************************************************
Ajax dynamic content
Copyright (C) 2006  DTHMLGoodies.com, Alf Magne Kalleland
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
This library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with this library; if not, write to the Free Software
Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
Dhtmlgoodies.com., hereby disclaims all copyright interest in this script
written by Alf Magne Kalleland.
Alf Magne Kalleland, 2006
Owner of DHTMLgoodies.com
************************************************************************************************************/	
var enableCache = true;
var jsCache = new Array();
var dynamicContent_ajaxObjects = new Array();
function ajax_showContent(divId,ajaxIndex,url)
{
var targetObj = document.getElementById(divId);
targetObj.innerHTML = dynamicContent_ajaxObjects[ajaxIndex].response;
if(enableCache){
jsCache[url] = 	dynamicContent_ajaxObjects[ajaxIndex].response;
}
dynamicContent_ajaxObjects[ajaxIndex] = false;
ajax_parseJs(targetObj)
}
function ajax_loadContent(divId,url)
{
if(enableCache && jsCache[url]){
document.getElementById(divId).innerHTML = jsCache[url];
ajax_parseJs(document.getElementById(divId))
evaluateCss(document.getElementById(divId))
return;
}
var ajaxIndex = dynamicContent_ajaxObjects.length;
document.getElementById(divId).innerHTML = 'Loading content - please wait';
dynamicContent_ajaxObjects[ajaxIndex] = new sack();
if(url.indexOf('?')>=0){
dynamicContent_ajaxObjects[ajaxIndex].method='GET';
var string = url.substring(url.indexOf('?'));
url = url.replace(string,'');
string = string.replace('?','');
var items = string.split(/&/g);
for(var no=0;no<items.length;no++){
var tokens = items[no].split('=');
if(tokens.length==2){
dynamicContent_ajaxObjects[ajaxIndex].setVar(tokens[0],tokens[1]);
}	
}	
url = url.replace(string,'');
}
dynamicContent_ajaxObjects[ajaxIndex].requestFile = url;	// Specifying which file to get
dynamicContent_ajaxObjects[ajaxIndex].onCompletion = function(){ ajax_showContent(divId,ajaxIndex,url); };	// Specify function that will be executed after file has been found
dynamicContent_ajaxObjects[ajaxIndex].runAJAX();		// Execute AJAX function	
}
function ajax_parseJs(obj)
{
var scriptTags = obj.getElementsByTagName('SCRIPT');
var string = '';
var jsCode = '';
for(var no=0;no<scriptTags.length;no++){	
if(scriptTags[no].src){
        var head = document.getElementsByTagName("head")[0];
        var scriptObj = document.createElement("script");
        scriptObj.setAttribute("type", "text/javascript");
        scriptObj.setAttribute("src", scriptTags[no].src);  	
}else{
if(navigator.userAgent.toLowerCase().indexOf('opera')>=0){
jsCode = jsCode + scriptTags[no].text + '\n';
}
else
jsCode = jsCode + scriptTags[no].innerHTML;	
}
}
if(jsCode)ajax_installScript(jsCode);
}
function ajax_installScript(script)
{		
    if (!script)
        return;		
    if (window.execScript){        	
    	window.execScript(script)
    }else if(window.jQuery && jQuery.browser.safari){ // safari detection in jQuery
        window.setTimeout(script,0);
    }else{        	
        window.setTimeout( script, 0 );
    } 
}	
function evaluateCss(obj)
{
var cssTags = obj.getElementsByTagName('STYLE');
var head = document.getElementsByTagName('HEAD')[0];
for(var no=0;no<cssTags.length;no++){
head.appendChild(cssTags[no]);
}	
}