function getElmById(aID){
	var element = null;
	
	if(document.getElementById) element=document.getElementById(aID);
	else if(document.layers) element=document.layers[aID];
	else if(document.all) element=document.all[aID];
	
	return element; 
}
function boton_in(btn){
	getElmById("boton"+btn).src="images/Untitled-1_0"+(btn+2)+"b.jpg";
}
function boton_out(btn){
	getElmById("boton"+btn).src="images/Untitled-1_0"+(btn+2)+"a.jpg";
}
function boton_in1(btn){
	getElmById("boton"+btn).src="../images/Untitled-1_0"+(btn+2)+"b.jpg";
}
function boton_out1(btn){
	getElmById("boton"+btn).src="../images/Untitled-1_0"+(btn+2)+"a.jpg";
}