function getQueryVariable(sParamName) 
{
    var sParamValue = null;
  
    var query = window.location.search.substring(1);    
    var vars = query.split("&");
    for(var i = 0; i < vars.length; i++) 
    {
	    var pair = vars[i].split("=");
         if(pair[0] == sParamName) 
         {
	         sParamValue = pair[1];
              break;
         }
    } 
    return sParamValue;
}
function $(eleName) 
{
    if(document.getElementById && document.getElementById(eleName)) 
    {
         return document.getElementById(eleName);
    }
    else if(document.all && document.all(eleName)) 
    {
         return document.all(eleName);
    }
    else if(document.layers && document.layers[eleName]) 
    {
         return document.layers[eleName];
    } 
    else 
    {
         return null;
    }
}