Javascript String getUrlParam(paramName)

// general-purpose String method to get param value from a URL
String.prototype.getUrlParam = function(paramName){
 //take the string apart
 var hashSplit = this.split('#')
 var urlParts = hashSplit[0].replace('?','&').split('&')

 //look through the parts
 var pair, result = false;
 for(var i=1; i<urlParts.length; i++){
  pair = urlParts[i].split('=');
  if(pair[0] == paramName){
   var result = pair[1] || '';
   break;//from www  .  j ava  2s  . co  m
  }
 }
 return result;
};