function toggleVis(obj)
    {
        var el = document.getElementById(obj);
        if ( el.style.display != 'none' )
        {
            el.style.display = 'none';
        }
        else
        {
            el.style.display = '';
        }
    }
 function Countdown(then) {
 	this.then = then;
 	function setElement(id, value) {
 		if (value.length < 2) {
 	    	value = "0" + value;
 		}
 		window.document.getElementById(id).innerHTML = value;
 	}
 	
 	function countdown() {
 		now  		  = new Date();
 	  	diff		  = new Date(this.then - now);
 		seconds_left  = Math.floor(diff.valueOf() / 1000);
 		seconds  = Math.floor(seconds_left / 1) % 60;
 		minutes  = Math.floor(seconds_left / 60) % 60;
 		hours    = Math.floor(seconds_left / 3600) % 24;
 		days     = Math.floor(seconds_left / 86400) % 86400;
 		
 		setElement('countdown-days', days);
 		setElement('countdown-hours', hours);
 		setElement('countdown-minutes', minutes);
 		setElement('countdown-seconds', seconds);
 		countdown.timer = setTimeout(countdown, 1000);
 	}
 	
 	function start() {
 		this.timer = setTimeout(countdown, 1000);
 	}
 	start(then);	
 }
 Countdown(new Date("Feb 07 2012 12:00:00"));