var http_request = false;
   var divContenedor = "";
   
   function makeGETRequest(url) {
      http_request = false;
      if (window.XMLHttpRequest) { // Mozilla, Safari,...
         http_request = new XMLHttpRequest();
         if (http_request.overrideMimeType) {
            http_request.overrideMimeType('text/html');
         }
      } else if (window.ActiveXObject) { // IE
         try {
            http_request = new ActiveXObject("Msxml2.XMLHTTP");
         } catch (e) {
            try {
               http_request = new ActiveXObject("Microsoft.XMLHTTP");
            } catch (e) {}
         }
      }
      if (!http_request) {
         alert('No se pudo crear la instancia XMLHTTP');
         return false;
      }
	  	  
      http_request.onreadystatechange = alertContents;	  
      http_request.open('GET', url, true);
      http_request.send(null);
   }
   
   function makePOSTRequest(url, parameters) {
      http_request = false;
      if (window.XMLHttpRequest) { // Mozilla, Safari,...
         http_request = new XMLHttpRequest();
         if (http_request.overrideMimeType) {
            http_request.overrideMimeType('text/html');
         }
      } else if (window.ActiveXObject) { // IE
         try {
            http_request = new ActiveXObject("Msxml2.XMLHTTP");
         } catch (e) {
            try {
               http_request = new ActiveXObject("Microsoft.XMLHTTP");
            } catch (e) {}
         }
      }
      if (!http_request) {
         alert('Cannot create XMLHTTP instance');
         return false;
      }
      
      http_request.onreadystatechange = alertContents;
      http_request.open('POST', url, true);
      http_request.setRequestHeader("Content-type", "application/x-www-form-urlencoded");
      http_request.setRequestHeader("Content-length", parameters.length);
      http_request.setRequestHeader("Connection", "close");
      http_request.send(parameters);
   }


   function alertContents() {	
   
      if (http_request.readyState == 4) {
         if (http_request.status == 200) {
            result = http_request.responseText;	
			changeText(result);
         } else {
            alert("Hubo un problema en ejecutar la peticion: " + http_request.responseText);
         }
      }
   }

	function sndReqGet(divCont,url) {
				
		divContenedor = divCont;
		if(url == ''){
			document.getElementById(divContenedor).innerHTML = '';
			return false;
		}
		
		makeGETRequest(url);
	}
	
	function sndReqPost(divCont,url,post) {
		
		divContenedor = divCont;
		if(url == ''){
			document.getElementById(divContenedor).innerHTML = '';
			return false;
		}		
		
		makePOSTRequest (url,post);
	}
	
	function changeText(text) {
		// Detect Browser
		document.getElementById(divContenedor).innerHTML = text;	
	}