function Query(query) 
{
    if(query.length > 1) 
    {
        this.query = query.substring( 1, query.length );
    }
    else 
    {
        this.q = null;
    }
    
    this.keyValuePairs = new Array();
    
    // parse all parameters
    if(query) 
    {
        for(var i = 0; i < this.query.split("&").length; i++) 
        {
            this.keyValuePairs[i] = this.query.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; 
    }
}