/**
SAL - Simple Ajax Lib. 23-Sep-2005
by Nigel Liefrink
Email: leafrink@hotmail.com
*/

var debug = false;
/**
Browser Compatability function.
Returns the correct XMLHttpRequest depending on the current browser.
*/
function GetXmlHttp() {	
	var xmlhttp = false;
	if (window.XMLHttpRequest)
	{
		xmlhttp = new XMLHttpRequest();
  	}
	else if (window.ActiveXObject)// code for IE
	{
		try 
		{
			xmlhttp = new ActiveXObject("Msxml2.XMLHTTP");
		} 
		catch (e) 
		{
			try 
			{
				xmlhttp = new ActiveXObject("Microsoft.XMLHTTP");
			} catch (E) {
				xmlhttp=false;
			}
		}
	}
	return xmlhttp;
}


/**
<summary>
Gets the response stream from the passed url, and then calls the callbackFuntion passing the response and the div_ids.
</summary>
<param name="url">The url to make the request to get the response data.</param>
<param name="callbackFunction">The function to call after the response has been recieved. the response <b>must</b> always be the first argument to the function.</param>
<param name="params"> (optional) Any other parameters you want to pass to the functions. (Note: only constants/strings/globals can be passed as params, most variables will be out of scope.) </param>
</summary>
<example>
	<code>
PassAjaxResponseToFunction('?getsomehtml=1', 'FunctionToHandleTheResponse', "\'div1\',\'div2\',\'div3\'');

function FunctionToHandleTheResponse(response, d1, d2, d3){
	var data = response.split(';');
	document.getElementById(d1).innerHTML = data[0];
	document.getElementById(d2).innerHTML = data[1];
	document.getElementById(d3).innerHTML = data[2];
}
	</code>
</example>
*/
function PassAjaxResponseToFunction(url,callbackFunction,params)
{		
	var xmlhttp = new GetXmlHttp();
	//now we got the XmlHttpRequest object, send the request.
  	if (xmlhttp)
	{
    	xmlhttp.onreadystatechange=function () 
                                {
	                                if (xmlhttp && xmlhttp.readyState==4)
	                                {//we got something back..
		                                if (xmlhttp.status==200)
		                                {
			                                var response = xmlhttp.responseText;
			                                var functionToCall;
			                                
			                                if (params)
			                                {
			                                	functionToCall=callbackFunction+'(xmlhttp,'+params+')';
			                                }
			                                else
		                                	{
		                                		functionToCall=callbackFunction+'(xmlhttp)';
		                                	}
		                                	
			                                if(debug){
				                                alert(response);
				                                alert (functionToCall);
			                                }
			                                eval(functionToCall);
		                                } else if(debug){
			                                document.write(xmlhttp.responseText);
		                                }
		                                
	                                }
                                }
    xmlhttp.open("POST",url,true);
    //xmlhttp.setRequestHeader("Content-type", "application/x-www-form-urlencoded");
    xmlhttp.send('');
  }
}

function PassAjaxResponseToFunctionParams(url,callbackFunction,params,serverParams)
{		
	var xmlhttp = new GetXmlHttp();
	var theServerParams='';
	//now we got the XmlHttpRequest object, send the request.
  	if (xmlhttp)
	{
    	xmlhttp.onreadystatechange=function () 
                                {
	                                if (xmlhttp && xmlhttp.readyState==4)
	                                {//we got something back..
		                                if (xmlhttp.status==200)
		                                {
			                                var response = xmlhttp.responseText;
			                                var functionToCall;
			                                
			                                if (params)
			                                {
			                                	functionToCall=callbackFunction+'(xmlhttp,'+params+')';
			                                }
			                                else
		                                	{
		                                		functionToCall=callbackFunction+'(xmlhttp)';
		                                	}
		                                	
			                                if(debug){
				                                alert(response);
				                                alert (functionToCall);
			                                }
			                                eval(functionToCall);
		                                } else if(debug){
			                                document.write(xmlhttp.responseText);
		                                }
		                                
	                                }
                                }
    if (serverParams)
    {
    	var theLine;
    	serverParams=serverParams.split(',');
    	for (var i=0;i<serverParams.length;i++)
    	{
    		theLine=getSingleParameter(serverParams[i]);
    		if (theLine.length > 0)
    		{
	    		if (theServerParams.length==0)
	    		{
	    			theServerParams=theLine;
	    		}
	    		else
	    		{
		    		theServerParams+='&'+theLine;
		    	}
		    }
    	}
    }
    xmlhttp.open("POST",url,true);
    xmlhttp.setRequestHeader("Content-type", "application/x-www-form-urlencoded");
    xmlhttp.send(theServerParams);
  }
}
function getSingleParameter(theID)
{
	var theField=document.getElementById(theID);
	var theRet='';
	if (theField)
	{
		theRet=theField.name+'='+encodeURI(theField.value);
    }
    return theRet;
}
function PassAjaxResponseToFunctionXML(url,callbackFunction,params,theXMLDoc)
{		
	var xmlhttp = new GetXmlHttp();
	//now we got the XmlHttpRequest object, send the request.
  	if (xmlhttp)
	{
    	xmlhttp.onreadystatechange=function () 
                                {
	                                if (xmlhttp && xmlhttp.readyState==4)
	                                {//we got something back..
		                                if (xmlhttp.status==200)
		                                {
			                                var response = xmlhttp.responseText;
			                                var functionToCall;
			                                if (params)
			                                {
			                                	functionToCall=callbackFunction+'(xmlhttp,'+params+')';
			                                }
			                                else
		                                	{
		                                		functionToCall=callbackFunction+'(xmlhttp)';
		                                	}
			                                if(debug){
				                                alert(response);
				                                alert (functionToCall);
			                                }
			                                eval(functionToCall);
		                                } else if(debug){
			                                document.write(xmlhttp.responseText);
		                                }
	                                }
                                }
    xmlhttp.open("POST",url,true);
    xmlhttp.send(theXMLDoc);
  }
}
/**
///<summary>
///Sets the innerHTML property of obj_id with the response from the passed url./
///</summary>
///<param name="url">The url to make the request to get the response data.</param>
///<param name="obj_id">The object or the id of the object to set the innerHTML for.</param>
*/
function SetInnerHTMLFromAjaxResponse(url, obj_id)
{		
  var xmlhttp = new GetXmlHttp();
  //now we got the XmlHttpRequest object, send the request.
  if (xmlhttp)
  {
    xmlhttp.onreadystatechange = function () 
                                {
	                                if (xmlhttp && xmlhttp.readyState==4)
	                                {//we got something back..
		                                if (xmlhttp.status==200)
		                                {
			                                if(debug){
				                                alert(xmlhttp.responseText);
			                                }
			                                if(typeof obj_id == 'object'){
				                                obj_id.innerHTML = xmlhttp.responseText;
			                                } else {
				                                document.getElementById(obj_id).innerHTML = xmlhttp.responseText;
			                                }
		                                } else if(debug){
			                                document.Write(xmlhttp.responseText);
		                                }
	                                }
                                }
    xmlhttp.open("GET",url,true);
    xmlhttp.send(null);
  }
}