PreLoadImage = function(on_image,off_image) {
	this.on_image = "http://cmedia.or.kr"+on_image;
	this.off_image = "http://cmedia.or.kr"+off_image;
}
var d=document;
var MenuTitle_Image = new Array();
if(d.images) {
	if(!d.MM_p) d.MM_p=new Array();
	image_length=d.MM_p.length;

	d.MM_p[image_length]=new Image;
	d.MM_p[image_length++].src="http://cmedia.or.kr/2007/images/photo_title_on.png";
	d.MM_p[image_length]=new Image;
	d.MM_p[image_length++].src="http://cmedia.or.kr/2007/images/photo_title_off.png";
	MenuTitle_Image[0] = new PreLoadImage('/2007/images/photo_title_on.png','/2007/images/photo_title_off.png');

	d.MM_p[image_length]=new Image;
	d.MM_p[image_length++].src="http://cmedia.or.kr/2007/images/movie_title_on.png";
	d.MM_p[image_length]=new Image;
	d.MM_p[image_length++].src="http://cmedia.or.kr/2007/images/movie_title_off.png";
	MenuTitle_Image[1] = new PreLoadImage('/2007/images/movie_title_on.png','/2007/images/movie_title_off.png');
}

function photo_movie_change(c1,c2) {
	var t1 = $('photo_title');
	var t2 = $('movie_title');
	var l1 = $('photo_list');
	var l2 = $('movie_list');
	t1.setAttribute("className",c1);
	t2.setAttribute("className",c2);
	if(c1 == 'on') {
		var i1 = t1.getElementsByTagName('img')[0];
		if(i1) {
			i1.src = MenuTitle_Image[0].on_image;
		}
		var i2 = t2.getElementsByTagName('img')[0];
		if(i2) {
			i2.src = MenuTitle_Image[1].off_image;
		}
	} else {
		var i1 = t1.getElementsByTagName('img')[0];
		if(i1) {
			i1.src = MenuTitle_Image[0].off_image;
		}
		var i2 = t2.getElementsByTagName('img')[0];
		if(i2) {
			i2.src = MenuTitle_Image[1].on_image;
		}
	}
	if(c1 == 'on') {
		l1.style.display = 'block';
		l2.style.display = 'none';
	} else {
		l1.style.display = 'none';
		l2.style.display = 'block';
	}
}

function updown_list(id,opt) {
	var obj = $(id);
	var ul = obj.getElementsByTagName('ul');
	if(!ul.length) return;
	var li = ul[0].getElementsByTagName('li');
	if(!li.length || li.length <=2) return;
	var idx=0;
	for(i=0; i<li.length; i++) {
		var cl = li[i].getAttribute("className");
		if(cl != 'hidden') {
			idx = i;
			break;
		}
	}
	if(!opt && idx > 0) {
		li[idx-1].setAttribute("className","");
		li[idx-1].style.display = "block";
		li[idx].setAttribute("className","line");
		if(idx+1 < li.length) {
			li[idx+1].setAttribute("className","hidden");
			li[idx+1].style.display = "none";
		}
	} else if(opt && idx+2 < li.length) {
		li[idx].setAttribute("className","hidden");
		li[idx].style.display = "none";
		li[idx+1].setAttribute("className","");
		li[idx+1].style.display = "block";
		li[idx+2].setAttribute("className","line");
		li[idx+2].style.display = "block";
	}
}