var http_request = false;
	function makePOSTRequest(url, parameters, my_span) {
		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 = function() { alertContents(my_span); };
      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(my_span) {
      if (http_request.readyState == 4) {
         if (http_request.status == 200) {
            result = http_request.responseText;
            document.getElementById(my_span).innerHTML = result;
         } else {
            alert("There was a problem with the request.");
         }
      }
   }
   function get(obj) {
		var poststr = "mytextarea1=" + escape(encodeURI(document.getElementById("mytextarea1").value ));
		makePOSTRequest("../index.php?ind=urlobox&op=update_block", poststr, "myspan");
   }