// Created by: Michael Yun Zhou
// Created on: Jan 8, 2009

// Open the lightbox
function openbox()
{
	var box = document.getElementById('lightbox');
	document.getElementById('lightbox_filter').style.display='block';

	gradient('lightbox', 0);
	fadein('lightbox');

}


// Close the lightbox
function closebox()
{
   document.getElementById('lightbox').style.display='none';
   document.getElementById('lightbox_filter').style.display='none';
}

function gradient(id, level)
{
	var box = document.getElementById(id);
	box.style.opacity = level;
	box.style.MozOpacity = level;
	box.style.KhtmlOpacity = level;
	box.style.filter = "alpha(opacity=" + level * 100 + ")";
	box.style.display="block";
	return;
}


function fadein(id)
{
	var level = 0;
	while(level <= 1)
	{
		setTimeout( "gradient('" + id + "'," + level + ")", (level* 1000) + 10);
		level += 0.01;
	}
}

function submitsurvey()
{
    var last_search = document.getElementById('last_search_survey').value;
    var recently_viewed = document.getElementById('recently_viewed_survey').value;
	var url = '/survey_submit.php?qid=1&answer='+encodeURIComponent(document.getElementById('answer').value)+'&lastsearch='+encodeURIComponent(last_search)+'&recently='+encodeURIComponent(recently_viewed);


	new Ajax.Request(url, {
	  method: 'get',
	  onSuccess: function() { closebox()}
	});

}

function cancelsurvey()
{
	var url = '/survey_submit.php?qid=1&answer='+encodeURIComponent('User clicked cancel');


	new Ajax.Request(url, {
	  method: 'get',
	  onSuccess: function() { closebox()}
	});

}