function change_pic(obj,img){
	if(obj.parentNode.className != "selected"){	
		if(obj.childNodes[0].className == 'selected'){
			obj.childNodes[0].src = 'gfx/jo-zine/'+obj.parentNode.id+'.jpg';
			obj.childNodes[0].className = '';
		}
		else{
			obj.childNodes[0].src = 'gfx/jo-zine/'+obj.parentNode.id+'_hover.jpg';
			obj.childNodes[0].className = 'selected';
		}
	}
}