function validateSearchPhrase(phrase, form) {            
        if(phrase.length > 0) {
        	form.action += '?phrase=' + phrase; 
            form.submit();    
        }
    }  
    
    function disableEnterKey(e)
    {
        var key;
        
        if(window.event)
          key = window.event.keyCode;     //IE
        else
          key = e.which;     //firefox
        
        if(key == 13)
          return false;
        else
          return true;
    }