function mouseOverfilms()
{
document.b1.src ="http://www.enter-media.net/Enter/images/buttons/films_onmouseover.png";
}
function mouseOutfilms()
{
document.b1.src ="http://www.enter-media.net/Enter/images/buttons/films_onmouseout.png";
}

function mouseOvermuziek()
{
document.b2.src ="http://www.enter-media.net/Enter/images/buttons/muziek_onmouseover.png";
}
function mouseOutmuziek()
{
document.b2.src ="http://www.enter-media.net/Enter/images/buttons/muziek_onmouseout.png";
}

function mouseOverevents()
{
document.b3.src ="http://www.enter-media.net/Enter/images/buttons/events_onmouseover.png";
}
function mouseOutevents()
{
document.b3.src ="http://www.enter-media.net/Enter/images/buttons/events_onmouseout.png";
}

function mouseOversoftware()
{
document.b4.src ="http://www.enter-media.net/Enter/images/buttons/software_onmouseover.png";
}
function mouseOutsoftware()
{
document.b4.src ="http://www.enter-media.net/Enter/images/buttons/software_onmouseout.png";
}

function mouseOvercontact()
{
document.b5.src ="http://www.enter-media.net/Enter/images/buttons/contact_onmouseover.png";
}
function mouseOutcontact()
{
document.b5.src ="http://www.enter-media.net/Enter/images/buttons/contact_onmouseout.png";
}