function PageQuery(q)
{
	if(q.length > 1) this.q = q.substring(1, q.length);
  else this.q = null;
  this.keyValuePairs = new Array();
  if(q)
	{
		for(var i=0; i < this.q.split("&").length; i++) {
          this.keyValuePairs[i] = this.q.split("&")[i];
        }
    }
      
    this.getKeyValuePairs = function() { return this.keyValuePairs; }
      
    this.getValue = function(s) {
      for(var j=0; j < this.keyValuePairs.length; j++) {
          if(this.keyValuePairs[j].split("=")[0] == s)
            return this.keyValuePairs[j].split("=")[1];
        }
        return false;
    }
      
      
    this.getParameters = function() {
        var a = new Array(this.getLength());
        for(var j=0; j < this.keyValuePairs.length; j++) {
          a[j] = this.keyValuePairs[j].split("=")[0];
        }
        return a;
    }
        
        
    this.getLength = function() { 
        return this.keyValuePairs.length; 
    } 
  }

function queryString(key){
	var page = new PageQuery(window.location.search); 
	return unescape(page.getValue(key)); 
  }


function displayItem(key){
	if(queryString(key)=='false')	{
      document.write("you didn't enter a ?name=value querystring item.");
    } else {
      document.write(queryString(key));
		}
	}

  
function ShowMenu(id) {
	document.getElementById(id).style.display="block";
	}
    
function HideMenu(id) {
	document.getElementById(id).style.display="none";
	}