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('mycommentspan').innerHTML = result;            
         } else {
            alert('There was a problem with the request.');
         }
      }
   }
   
   function get(obj) {
      var poststr = "comment_txt=" + encodeURI( document.getElementById("comment_txt").value ) +
                    "&vid=" + encodeURI( document.getElementById("vid").value );
      makePOSTRequest(''+MELODYURL+'/comment.php', poststr);
   }

function submitonce(theform){
//if IE 4+ or NS 6+
    if(document.getElementById("comment_txt").value == '' || document.getElementById("comment_txt").value == 'test'){
        alert('You need to write a comment first!');
    }
    else{
		if (document.all||document.getElementById){
		//screen thru every element in the form, and hunt down "submit" and "reset"
		for (i=0;i<theform.length;i++){
		var tempobj=theform.elements[i]
		if(tempobj.type.toLowerCase()=="submit"||tempobj.type.toLowerCase()=="reset")
		//disable em
		tempobj.disabled=true
		}
		}
	}
}
	

function validateSearch(b_on_submit){
    if(document.forms['search'].keywords.value == '' || document.forms['search'].keywords.value == 'search'){
        alert('You did not enter a search term. Please try again.');
        if(b_on_submit == 'true')
            return false;
    }
    else{
        document.forms['search'].submit();
    }
}