if (document.images){
drw_off = new Image();
drw_on = new Image();
ptn_off = new Image();
ptn_on = new Image();
car_off = new Image();
car_on = new Image();
jun_off = new Image();
jun_on = new Image();
puz_off = new Image();
puz_on = new Image();
col_off = new Image();
col_on = new Image();
edt_off = new Image();
edt_on = new Image();
arch_off = new Image();
arch_on = new Image();
eve_off = new Image();
eve_on = new Image();
bio_off = new Image();
bio_on = new Image();
news_off = new Image();
news_on = new Image();
con_off = new Image();
con_on = new Image();

drw_off.src = def_path + 'images/nav/drw_off.gif';
drw_on.src = def_path + 'images/nav/drw_on.gif';
ptn_off.src = def_path + 'images/nav/ptn_off.gif';
ptn_on.src = def_path + 'images/nav/ptn_on.gif';
car_off.src = def_path + 'images/nav/car_off.gif';
car_on.src = def_path + 'images/nav/car_on.gif';
jun_off.src = def_path + 'images/nav/jun_off.gif';
jun_on.src = def_path + 'images/nav/jun_on.gif';
puz_off.src = def_path + 'images/nav/puz_off.gif';
puz_on.src = def_path + 'images/nav/puz_on.gif';
col_off.src = def_path + 'images/nav/col_off.gif';
col_on.src = def_path + 'images/nav/col_on.gif';
edt_off.src = def_path + 'images/nav/edt_off.gif';
edt_on.src = def_path + 'images/nav/edt_on.gif';
arch_off.src = def_path + 'images/nav/arch_off.gif';
arch_on.src = def_path + 'images/nav/arch_on.gif';
eve_off.src = def_path + 'images/nav/eve_off.gif';
eve_on.src = def_path + 'images/nav/eve_on.gif';
bio_off.src = def_path + 'images/nav/bio_off.gif';
bio_on.src = def_path + 'images/nav/bio_on.gif';
news_off.src = def_path + 'images/nav/news_off.gif';
news_on.src = def_path + 'images/nav/news_on.gif';
con_off.src = def_path + 'images/nav/con_off.gif';
con_on.src = def_path + 'images/nav/con_on.gif';
}


if (document.images){
nav1_off = new Image();
nav1_on = new Image();
nav2_off = new Image();
nav2_on = new Image();
nav3_off = new Image();
nav3_on = new Image();
nav4_off = new Image();
nav4_on = new Image();
nav5_off = new Image();
nav5_on = new Image();
nav6_off = new Image();
nav6_on = new Image();
nav7_off = new Image();
nav7_on = new Image();
nav8_off = new Image();
nav8_on = new Image();
nav9_off = new Image();
nav9_on = new Image();
nav10_off = new Image();
nav10_on = new Image();
nav11_off = new Image();
nav11_on = new Image();

nav1_off.src = def_path + 'images/nav1.gif';
nav1_on.src = def_path + 'images/nav1_on.gif';
nav2_off.src = def_path + 'images/nav2.gif';
nav2_on.src = def_path + 'images/nav2_on.gif';
nav3_off.src = def_path + 'images/nav3.gif';
nav3_on.src = def_path + 'images/nav3_on.gif';
nav4_off.src = def_path + 'images/puzzles_off.gif';
nav4_on.src = def_path + 'images/puzzles_on.gif';
nav5_off.src = def_path + 'images/bande_off.gif';
nav5_on.src = def_path + 'images/bande_on.gif';
nav6_off.src = def_path + 'images/privatee_off.gif';
nav6_on.src = def_path + 'images/privatee_on.gif';
nav7_off.src = def_path + 'images/nav7.gif';
nav7_on.src = def_path + 'images/nav7_on.gif';
nav8_off.src = def_path + 'images/nav8.gif';
nav8_on.src = def_path + 'images/nav8_on.gif';
nav9_off.src = def_path + 'images/nav9.gif';
nav9_on.src = def_path + 'images/nav9_on.gif';
nav10_off.src = def_path + 'images/nav10.gif';
nav10_on.src = def_path + 'images/nav10_on.gif';
nav11_off.src = def_path + 'images/nav11.gif';
nav11_on.src = def_path + 'images/nav11_on.gif';
}


function roll(sname,rname){
    sname.src = rname.src;
}

function id2elem(id) {
	if (typeof(id) != 'string') {
		return id;
	}
	if (document.getElementById) {
		id = document.getElementById(id);
	} else if (document.all) {
		id=document.all[id];
	} else {
		id = null;
	}
	return id;
}

function switcher(id,s){//this function turns a div with id on or off, according to s
    if (s==0){
		   id2elem(id).style.display="none";
		}else{
		   id2elem(id).style.display="block";
		}
}
/*
function showvideo(){
    v=id2elem('videobox');
    if (v.style.display=='none'){
       id2elem('videobox').style.display = 'block';
    }else{
       id2elem('videobox').style.display = 'none';
    }
}

function showaudio(){
    v=id2elem('audiobox');
    if (v.style.display=='none'){
       id2elem('audiobox').style.display = 'block';
    }else{
       id2elem('audiobox').style.display = 'none';
    }
}
*/

function showvideo(id){
    newwindow = window.open(def_path+'video/?v='+id,'videowindow','width=350,height=300,status=0,scrollbars=0,toolbar=0,location=0,menubar=0,directories=0,resizable=1,top=100,left=100');
}

function showaudio(id){
    newwindow = window.open(def_path+'audio/?v='+id,'audiowindow','width=350,height=300,status=0,scrollbars=0,toolbar=0,location=0,menubar=0,directories=0,resizable=1,top=100,left=100');
}


var d_idx = 0;
var p_idx = 0;

function rotate_images(){
	$('home_drawing').src = drawings[d_idx].img;
	$('drawing_link').href = def_path+'drawings/detail/?p='+drawings[d_idx].id;
	d_idx ++;
	if(d_idx == drawings.length)
		d_idx = 0;

	$('home_painting').src = paintings[p_idx].img;
	$('painting_link').href = def_path+'paintings/detail/?p='+paintings[p_idx].id;
	p_idx ++;
	if(p_idx == paintings.length)
		p_idx = 0;

    setTimeout("wait()",4000);
}

function wait(){
	rotate_images();
}