function buttonHover(button, height, direction){
	

	if(direction == "over"){
	document.getElementById(button).style.height= height + "px";
	document.getElementById(button).style.backgroundPosition="0px -25px";
	}
		
	if(direction == "out"){
	document.getElementById(button).style.height= height + "px";
	document.getElementById(button).style.backgroundPosition="0px 0px";
	}

}