var ajax = false;
function create_ajax()
{	
	if (window.XMLHttpRequest)
	{
		ajax = new XMLHttpRequest();
		if (ajax.overrideMimeType)
		{ajax.overrideMimeType('text/xml');}
	}
	else if (window.ActiveXObject)
	{
		try {
				ajax = new	ActiveXObject("Msxml2.XMLHTTP");
			}
			catch (e) {
						try {
								ajax = new
								ActiveXObject("Microsoft.XMLHTTP");
							} catch (e) {}
					  }
	}
	
	if (!ajax) 
	{
		alert('Giving up :( Cannot create an XMLHTTP instance');					   
		return false;
	}		
}

function send_ajax(param,e)
{	
	ajax.open('POST', "site/ajax/ajax.php", true);
	ajax.setRequestHeader('Content-Type', 'application/x-www-form-urlencoded');	
	
	ajax.onreadystatechange = function()
	{
		if (ajax.readyState == 4)
		{		
			if (ajax.status == 200)
			{				
				document.getElementById(e).innerHTML = ajax.responseText;			
			}			
		}	
	}
	
	ajax.send(param);
	
}