buttonUp = new Image; buttonUp.src = "../images/maylogo.gif";
buttonDown = new Image; buttonDown.src = "../images/gralogo.gif";

function MouseOverRoutine(ButtonName)
{
if (ButtonName=="button") 
{document.button.src = buttonDown.src;}
}

function MouseOutRoutine(ButtonName)
{
if (ButtonName=="button") 
{document.button.src = buttonUp.src;}
}