function showDa(daId)
{
	document.getElementById(daId).style.visibility = "visible";
}

function hideDa(daId)
{
	document.getElementById(daId).style.visibility = "hidden";
}

function showDropDown(dropDownId)
{
	document.getElementById(dropDownId).style.visibility = "visible";	
	rollover("menu"+dropDownId);
}

function hideDropDown(dropDownId)
{
	document.getElementById(dropDownId).style.visibility = "hidden";
	rollout("menu"+dropDownId);
}

function rollover(rolloverId)
{
	document.getElementById(rolloverId).style.backgroundColor = "#FFFFFF";
}

function rollout(rolloverId)
{
	document.getElementById(rolloverId).style.backgroundColor = "transparent";
}