function getHTTPObject()
{
	var xmlhttp;
	
	/*@cc_on
	  @if (@_jscript_version >= 5)
	  try {
		  xmlhttp = new ActiveXObject("Msxml2.XMLHTTP");
	  } catch (e) {
		  try {
			  xmlhttp = new ActiveXObject("Microsoft.XMLHTTP");
		  } catch (E) {
			  xmlhttp = false;
		  }
	  }
	  @else
		  xmlhttp = false;
	  @end @*/

	if (!xmlhttp && typeof XMLHttpRequest != 'undefined') {
		try {
			xmlhttp = new XMLHttpRequest();
		} catch (e) {
			xmlhttp = false;		/* el navegador no soporta ajax */
			alert('el navegador no soporta ajax');
		}
	}

	return xmlhttp;
}