var loadstatustext="<div style='direction:rtl; text-align:center;font-family:tahoma;font-size:10px;'><img src="+ loadingImagePath +" align='absmiddle' /><br/>بارگذاری...</div>";

function expandtab(tabcontentid, tabnumber)
{
	var thetab=tabcontentid.getElementsByTagName("a")[tabnumber];
	if (thetab.getAttribute("rel"))
		ajaxpage(thetab.getAttribute("href"), thetab.getAttribute("rel"), thetab);
}
function ajaxpage(url, containerid, targetobj)
{
    var page_request = false;
    if (window.XMLHttpRequest) // if Mozilla, Safari etc
	    page_request = new XMLHttpRequest();
    else if (window.ActiveXObject)
    { // if IE
		try {
	    	    page_request = new ActiveXObject("Msxml2.XMLHTTP");
		    }
		catch(e)
		    {
		        try{
			        page_request = new ActiveXObject("Microsoft.XMLHTTP");
			        }
			    catch (e){}
			}
	}else
		return false;
    document.getElementById(containerid).innerHTML=loadstatustext;
    page_request.onreadystatechange=function()
                                    {
                                        loadpage(page_request, containerid);
                                    }
    page_request.open('GET', url, true);
    page_request.send(null);
}
function loadpage(page_request, containerid){
	try
	{	
		if (page_request.readyState == 4 && (page_request.status==200 || window.location.href.indexOf("http")==-1))
		{
			document.getElementById(containerid).innerHTML = page_request.responseText;
		}
	}catch(e){
		alert("loadpage--> " + e.message + " - readyState:" + page_request.readyState + " - status:" + page_request.status);
	}
}