javascript snippet for getting url parameters

function getReqParam( 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];
 }
}

i will explain the logic later on ;-) that reminds me, i also need to add a source code highlighter to my blog.. hang on until the long weekend, will get it done!!