function show(a_sDiv)
{
	if (document.getElementById)
		document.getElementById(a_sDiv).style.visibility	= "visible";
	else if (document.layers)
		document.layers[a_sDiv].visibility					= "visible";
	else if (document.all)
		document.all[a_sDiv].style.visibility				= "visible";
}

function hide(a_sDiv)
{
	if (document.getElementById)
		document.getElementById(a_sDiv).style.visibility	= "hidden";
	else if (document.layers)
		document.layers[a_sDiv].visibility					= "hidden";
	else if (document.all)
		document.all[a_sDiv].style.visibility				= "hidden";
}

function display(a_sDiv)
{
	for (var i = 0; i < 4; i++)
		hide("lay" + (i + 1));
	show(a_sDiv);
}

function checkBox(a_oForm, a_sBox)
{
	a_oForm.elements[a_sBox].checked	= 1;
}

function setFormValue(a_oForm, a_sControl, a_sValue)
{
	a_oForm.elements[a_sControl].value	= a_sValue;
}