function buttonHover(where,id)
	{
	document.getElementById(id).style.background = "url("+where+"library/button_h.gif)"
    }
	
function buttonOut(where,id)
	{
	document.getElementById(id).style.background = "url("+where+"library/button.gif)"
	}
	
function hideMovielayers()
	{
	document.getElementById('plot').style.visibility = "hidden"
	document.getElementById('cast').style.visibility = "hidden"
	document.getElementById('director').style.visibility = "hidden"
	document.getElementById('shots').style.visibility = "hidden"
	document.getElementById('buyit').style.visibility = "hidden"
	}

function showLayer(id)
	{
	hideMovielayers()
	document.getElementById(id).style.visibility = "visible"
	}