function rollIn(imgName, pic) {
    var image = pic+"_h.gif"
	var decor = pic+"_d.gif"
	document.getElementById(imgName).src=image;
	document.getElementById("menu").src=decor;
}
function rollOut(imgName, pic) {
    var image = pic+".gif"
	document.getElementById(imgName).src=image;
}

function rollInTab(imgName, pic) {
    var image = pic+"_h.gif"
	document.getElementById(imgName).src=image;
}

function rollOutTab(imgName, pic) {
    var image = pic+".gif"
	document.getElementById(imgName).src=image;
}