function hover() {

var rows = document.getElementsByTagName('tr');
for (var i = 0; i < rows.length; i++) {
rows[i].onmouseover = function() {
this.className += ' hilite';
}
rows[i].onmouseout = function() {
this.className = this.className.replace('hilite', '');
}}}

function showdiv(a)
{ 
	var i=1;
	while (div = document.getElementById('f'+i))
		{
			div.style.display="none";
			i++;
		}
		a=document.getElementById(a); 
		if (a.style.display=="block")
		{
			a.style.display="none";
		} else
		{
		a.style.display="block";
		}
}