function mouse_over(id){
	var obj=document.getElementById(id);
	obj.style.backgroundImage="url()";
	obj.style.color="#000";
}

function mouse_out(id){
	var obj=document.getElementById(id);
	obj.style.backgroundImage="";
	obj.style.color="";
}

function go_url(url){
	document.location=url;
}