var contenedorGIF;function fc(){var xmlhttp,bComplete=false;try{xmlhttp=new ActiveXObject("Msxml2.XMLHTTP")}catch(e){try{xmlhttp=new ActiveXObject("Microsoft.XMLHTTP")}catch(e){try{xmlhttp=new XMLHttpRequest()}catch(e){xmlhttp=false}}}if(!xmlhttp)return null;this.connect=function(sURL,sMethod,sVars,fnDone){if(!xmlhttp)return false;bComplete=false;sMethod=sMethod.toUpperCase();try{if(sMethod=="GET"){xmlhttp.open(sMethod,sURL+"?"+sVars,true);sVars=""}else{xmlhttp.open(sMethod,sURL,true);xmlhttp.setRequestHeader("Method","POST "+sURL+" HTTP/1.1");xmlhttp.setRequestHeader("Content-Type","application/x-www-form-urlencoded")}xmlhttp.onreadystatechange=function(){if(xmlhttp.readyState==4&&!bComplete){bComplete=true;fnDone(xmlhttp)}else{document.getElementById(contenedorGIF).innerHTML='<img src="imagenes/cargando.gif" />'}};xmlhttp.send(sVars)}catch(z){return false}return true};return this}