Event.observe(window, 'load', function(event)
{
    var search    = $('keywords');
    search.active = false;
    search.onclick = function()
    {
        if(!this.active)
        {
            this.active = true;
            this.value  = '';
        };
    };
    
    search.onblur = function()
    {
        if(this.value == '')
        {
            this.active = false;
            this.value  = 'Search...'
        };
    };
});