/************************************************************************************************************
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,userEnableCache)
{
	var targetObj = document.getElementById(divId);
	targetObj.innerHTML = dynamicContent_ajaxObjects[ajaxIndex].response;
	if(userEnableCache == true || (userEnableCache==null && enableCache)){
		jsCache[url] = 	dynamicContent_ajaxObjects[ajaxIndex].response;
	}
	dynamicContent_ajaxObjects[ajaxIndex] = false;

	ajax_parseJs(targetObj);
}

function ajax_loadContent(divId,url,userEnableCache,disableLoadingMessage,callBackFunction)
{
	if((userEnableCache == true || (userEnableCache==null && enableCache)) && jsCache[url]){
		document.getElementById(divId).innerHTML = jsCache[url];
		return;
	}
	
	var ajaxIndex = dynamicContent_ajaxObjects.length;
        if (disableLoadingMessage != true) {
            document.getElementById(divId).innerHTML = 'Loading content - please wait';
        }
	dynamicContent_ajaxObjects[ajaxIndex] = new sack();
	dynamicContent_ajaxObjects[ajaxIndex].requestFile = url;	// Specifying which file to get
	dynamicContent_ajaxObjects[ajaxIndex].onCompletion = function() { 
                ajax_showContent(divId,ajaxIndex,url,userEnableCache); 
                if (callBackFunction != null)
                    callBackFunction();
        };	// Specify function that will be executed after file has been found
	dynamicContent_ajaxObjects[ajaxIndex].method="GET";
	if (url.indexOf('?') != -1) {
	    dynamicContent_ajaxObjects[ajaxIndex].queryStringSeparator="&";
	}
	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.indexOf('Opera')>=0){
				jsCode = jsCode + scriptTags[no].text + '\n';
			}
			else {
				jsCode = jsCode + scriptTags[no].innerHTML;
			}
		}

	}
	//alert(scriptTags.length + jsCode);
	//alert(obj.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, 1 );
    } 
}