function iniciaAjax()
{
	var objetoAjax = false;
	if(window.XMLHttpRequest)
	{
		objetoAjax = new XMLHttpRequest();
	}
	else if(window.ActiveXObject)
	{
		try
		{
			objetoAjax = new ActiveXObject("Msxml2.XMLHTPP");
		}catch(e)
		{
			try
			{
				objetoAjax = new ActiveObject("Microsoft.XMLHTTP");
			}
			catch(ex)
			{
				objetoAjax = False;
			}
		}
	}
	return objetoAjax;
}