/************************************************************/
//Obtener XMLHttpRequest dependiendo del navegador utilizado*/
//-GSQ-2007                                                 */ 
/************************************************************/
function getXmlHttpRequest() {

	try {
	req = new XMLHttpRequest();           //FireFox//
	} catch(error1) {
		try {
		req = new ActiveXObject("Msxml2.XMLHTTP");      //IE v.1//
		} catch (error2) {
			try {
			req = new ActiveXObject("Microsoft.XMLHTTP");        //IE v.2//
			} catch (error3) {
				req = false;
			}
		}
	}

return req;

} //getXmlHttpRequest


/****************************/
/* Obtener número aleatorio */
/****************************/
function get_random(){

var random_number = (Math.random()*9999999999999);
return random_number;

}//get random--------------------------------------