function addEvent(elm,evType,fn,useCapture)
{
    if(elm.addEventListener) 
    {
        elm.addEventListener(evType,fn,useCapture);
        return true;
    }
    else if(elm.attachEvent) 
    {
        var r = elm.attachEvent('on' + evType,fn);
        return r;
    }
    else 
    {
        elm['on' + evType] = fn;
    }
}

function getUrlParameters(name)
{
  name = name.replace(/[\[]/,"\\\[").replace(/[\]]/,"\\\]");
  var regexS = "[\\?&]"+name+"=([^&#]*)";
  var regex = new RegExp( regexS );
  var results = regex.exec( window.location.href );
  if( results == null )
    return "";
  else
    return results[1];
}