today=new Date(); jran=today.getTime();
function rnd() {
	ia=9301;
	ic=49297;
	im=233280;
	jran = (jran*ia+ic) % im;
	return jran/(im*1.0); 
}
function rand(number) {
	return Math.ceil(rnd()*number);
}
function del_field(var1,var2,var3,var4,var5)
{
	document.getElementById(var1).value='';
	document.getElementById(var2).style.display='none';
	document.getElementById(var3).style.display='inline';
	document.getElementById(var4).style.width=var5;
}
function add_field(var1,var2,var3,var4)
{
	document.getElementById(var1).style.display='block';
	document.getElementById(var2).style.display='none';
	document.getElementById(var3).style.width=var4;
}
function del_selectbox(var1,var2,var3,var4,var5)
{
	document.getElementById(var1).selected='true';
	document.getElementById(var2).style.display='none';
	document.getElementById(var3).style.display='inline';
	document.getElementById(var4).style.width=var5;
}
function addnew(var1,var2)
{
	document.getElementById(var1).style.display='block';
	document.getElementById(var2).style.display='none';
}
function delnew(var1,var2,var3)
{
	document.getElementById(var1).value='';
	document.getElementById(var2).style.display='none';
	document.getElementById(var3).style.display='block';
}
function cancel()
{
   answer = confirm('Do you really want to discard your changes?');
	if (answer != 0)
	{
		location = 'index.jsp';
	}
}
function logout()
{
	answer = confirm('Do you really want to logout of Irish Resources in the Humanities?');
	if (answer != 0)
	{
		location = 'logout.jsp';
	}
}