var loaderImg = "images/loader.gif";
var loadingStr = "<img src=\""+loaderImg+"\">";
function $(id){
	if(document.getElementById(id))
	return document.getElementById(id);
	
}

function aGet(url, divid, response){
	
	
	$(divid).style.visibility = 'visible';
	if($(divid).src) $(divid).src = loaderImg;
		else
	$(divid).innerHTML =  '<img src="' + loaderImg + '">';
	var method = "GET";
	
		
	if (window.XMLHttpRequest) 
		GlobalAjaxObject = new XMLHttpRequest();
	else if(window.ActiveXObject)
		GlobalAjaxObject = new ActiveXObject("Msxml2.XMLHTTP"); 
	else { 
		alert('Your browser is not supported.')
		return; 
	}
	GlobalAjaxObject.open(method, url, true); 
	GlobalAjaxObject.setRequestHeader("Content-type", "AJAX-REQUEST");
	GlobalAjaxObject.onreadystatechange = function (){
		
		if(GlobalAjaxObject.readyState == 4){
			
			if(!response) response = GlobalAjaxObject.responseText;
			
		if($(divid).src) $(divid).src = response;
		else
		$(divid).innerHTML =  response;
	
	}
		
	}
	GlobalAjaxObject.send(null);
	
}

function checkForNewMessage(){

	if($('newMsg') && !$('newMsg').innerHTML){
		aGet("index.php?action=messages", "newMsg", '');
		
			setTimeout("checkForNewMessage()", 30000)
	}
	
}


//window.onload = setTimeout("checkForNewMessage()", 1000);

function showDiv(id){
	
	$(id).style.visibility = 'visible';
	
}

function hideDiv(id){
	
	$(id).style.visibility = 'hidden';
	
}

    function aForm(obj, divid)
    {
   		
    	ajaxpostform(obj.action, divid, obj);
    	
        return false;
    }
    
    
function ajaxpostform(url, divid, obj){
	
	var passData;
	
	
	if(obj){
	for(i = 0; i <= obj.length-1; i++){

		if(obj.elements[i].name){
			
			if((obj.elements[i].type != 'checkbox' && obj.elements[i].type != 'radio') || (obj.elements[i].checked == true))
			passData = passData +  "&" + obj.elements[i].name+"="+escape(obj.elements[i].value);
		}
			
	}
	}

	$(divid).innerHTML = loadingStr;
	
var AJAX = null;
if (window.XMLHttpRequest) {
   AJAX=new XMLHttpRequest();
} else {
   AJAX=new ActiveXObject("Microsoft.XMLHTTP");
}
if (AJAX==null) {
   alert("Your browser doesn't support AJAX.");                                         
   return false
} else {
   AJAX.open(obj.method, url, true);
   AJAX.setRequestHeader("Content-type", "application/x-www-form-urlencoded");
   AJAX.setRequestHeader("Form-submit-mode", "ajax-request");
   AJAX.onreadystatechange = function() {  
   	               
      if (AJAX.readyState==4 || AJAX.readyState=="complete") { 
    
			$(divid).innerHTML = AJAX.responseText;
         
      }                               
   }                                  
   AJAX.send(passData);
}
	
}