var objXML;
var objXMLContactos;

function GetXmlHttpObject()
{
	if (window.XMLHttpRequest){
		return new XMLHttpRequest();
	}
	else if (window.ActiveXObject){
		try{
			return new ActiveXObject('Msxml2.XMLHTTP');
		}catch(e){
			try{
				return new ActiveXObject('Microsoft.XMLHTTP');
			}catch(e){}
		}
	}
	return null;
}

function load_page(s,a)
{
	objXML=GetXmlHttpObject();
	if (objXML!=null)
	{
		var url=s+'.php?ajax=1&'+Math.random();
		if (a!=null)
		{
			url += '&a=' + a;	
		}
		objXML.onreadystatechange=load_page_StateChanged;
		objXML.open('GET',url,true);
		objXML.send(null);
	}

	return false;
}

function load_page_StateChanged()
{
	if (objXML && objXML.readyState==4)
	{
		$('#conteudo_din').stop(true,true);
		$('#conteudo_din').html(objXML.responseText).fadeIn();
		objXML=null;
	}
}