function buttonEffect(yer,image){document.getElementById(yer).src	= image;}
	
function downEffect(yer,top,left,right,bottom){
var placer = document.getElementById(yer).style;
	placer.marginTop		= ""+top+"px";
	placer.marginRight		= ""+right+"px";
	placer.marginLeft		= ""+left+"px";
	placer.marginBottom	= ""+bottom+"px";
}