var http_request = false;
   function makePOSTRequest(url, parameters) {
      http_request = false;
      if (window.XMLHttpRequest) { // Mozilla, Safari,...
         http_request = new XMLHttpRequest();
         if (http_request.overrideMimeType) {
         	// set type accordingly to anticipated content type
            //http_request.overrideMimeType('text/xml');
            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) {
            //alert(http_request.responseText);
            result = http_request.responseText;
            document.getElementById('myspan').innerHTML = result;            
         } else {
            alert('There was a problem with the request.');
         }
      }
   }
   


   function get(obj) {

	var frm = document.forms[0]; 
    	var fn = frm.fullname.value; 
    	var co = frm.company.value; 
    	var em = frm.email.value; 
    	var tb = frm.tabid.value; 
	var ex = frm.optin.checked;
	var tl = frm.tel.value;

	var dl = document.getElementById('docdoc').innerHTML;

        var poststr = "fullname=" + encodeURI(fn) +
                    "&company=" + encodeURI(co) +
                    "&email=" + encodeURI(em) +
                    "&download=" + encodeURI(dl) +
                    "&tabid=" + encodeURI(tb) + 
		    "&optin=" + encodeURI(ex) +
		    "&tel=" + encodeURI(tl);	
	
	var filter = /^([a-zA-Z0-9_\.\-])+\@(([a-zA-Z0-9\-])+\.)+([a-zA-Z0-9]{2,4})+$/;
	if (!filter.test(frm.email.value) && frm.email.value != "") {
		alert('Please provide a valid email address');
		email.focus
		return false;
	}
	else {

		makePOSTRequest('http://www.mti.com/post.asp', poststr);

	}
   }