function hideActive() {
	ai = document.getElementById('active');
	ai.style.background='none';
}

function showActive() {
	ai = document.getElementById('active');
	ai.style.background='url(../images/over.gif) no-repeat 4px 0';
}
document.getElementById('h1').onmouseover=function() { hideActive(); }
document.getElementById('h1').onmouseout=function() { showActive() };
document.getElementById('h2').onmouseover=function() { hideActive(); }
document.getElementById('h2').onmouseout=function() { showActive() };
document.getElementById('h3').onmouseover=function() { hideActive(); }
document.getElementById('h3').onmouseout=function() { showActive() };
document.getElementById('h4').onmouseover=function() { hideActive(); }
document.getElementById('h4').onmouseout=function() { showActive() };
document.getElementById('h5').onmouseover=function() { hideActive(); }
document.getElementById('h5').onmouseout=function() { showActive() };
document.getElementById('a1').onclick=function () { return false; }
document.getElementById('a2').onclick=function () { return false; }
document.getElementById('a3').onclick=function () { return false; }
document.getElementById('a4').onclick=function () { return false; }
document.getElementById('a5').onclick=function () { return false; }