var A,B;
A=new Image(30,14);
B=new Image(30,14);

A.src='im/bt_off.gif';
B.src='im/bt_on.gif';

function  Onup(name){
		if (document.images){
			document.images[name].src=B.src;
		} else {
			document.name.src=B.src;
		}
}


function  Onout(name){
		if (document.images){
			document.images[name].src=A.src;
		} else {
			document.name.src=A.src;
		}
}