//rollover
function roll(obj, state, ext) {
	if (ext == null){ext = 'gif'};
  	if (state == 0) { document.images[obj].src = "/img/" + obj + "_0."+ext };
  	if (state == 1) { document.images[obj].src = "/img/" + obj + "_1."+ext };
}

var DHTML = (document.getElementById || document.all || document.layers);

function getObj(name){
    if (document.getElementById){
        this.obj = document.getElementById(name);
        this.style = document.getElementById(name).style;
    }
    else if (document.all){
        this.obj = document.all[name];
        this.style = document.all[name].style;
    }
    else if (document.layers){
        this.obj = document.layers[name];
        this.style = document.layers[name];
    }
}

function toggle(div,flag){
	if (!DHTML) return;
	var x = new getObj(div);
	x.style.display = (flag) ? 'none' : 'block'
	x.style.visibility = (flag) ? 'hidden' : 'visible';
}

//wallpapers toggle
var n = 0;

function changeWP(n){
	switch(n){
	case 1:
		toggle('wp1',0);
		toggle('wp2',1);
		toggle('wp3',1);
		toggle('wp4',1);
		//roll('wallpaper_th1',1,'jpg');
		//roll('wallpaper_th2',0,'jpg');
		//roll('wallpaper_th3',0,'jpg');
		//roll('wallpaper_th4',0,'jpg');
		
	  	break;
	case 2:
		toggle('wp1',1);
		toggle('wp2',0);
		toggle('wp3',1);
		toggle('wp4',1);
		//roll('wallpaper_th1',0,'jpg');
		//roll('wallpaper_th2',1,'jpg');
		//roll('wallpaper_th3',0,'jpg');
		//roll('wallpaper_th4',0,'jpg');
	  	break;
	case 3:
		toggle('wp1',1);
		toggle('wp2',1);
		toggle('wp3',0);
		toggle('wp4',1);
		//roll('wallpaper_th1',0,'jpg');
		//roll('wallpaper_th2',0,'jpg');
		//roll('wallpaper_th3',1,'jpg');
		//roll('wallpaper_th4',0,'jpg');
	  	break;
	case 4:
		toggle('wp1',1);
		toggle('wp2',1);
		toggle('wp3',1);
		toggle('wp4',0);
		//roll('wallpaper_th1',0,'jpg');
		//roll('wallpaper_th2',0,'jpg');
		//roll('wallpaper_th3',0,'jpg');
		//roll('wallpaper_th4',1,'jpg');
	  	break;
	default:
		toggle('wp1',0);
		toggle('wp2',1);
		toggle('wp3',1);
		toggle('wp4',1);
		//roll('wallpaper_th1',1,'jpg');
		//roll('wallpaper_th2',0,'jpg');
		//roll('wallpaper_th3',0,'jpg');
		//roll('wallpaper_th4',0,'jpg');
		break;
	}
}