function ShowTip( which, reference, ths )
{

	if( which == reference )
	{
		//tooltip.show('<span style="color:yellow;font-size:24px;">You are here</span>');
		return;
	}

	if( navigator.appName.indexOf( 'Internet Explorer' ) >= 0 )
	{
		ths.style.cursor='hand';
	}
	else
	{
		ths.style.cursor='pointer';
	}
	switch( which )
	{
		case 1:
			tooltip.show('<span style="font-size:24px;">See writing that Rick has done</span>');
			break;
		case 2:
			tooltip.show('<span style="font-size:24px;">See software that Rick has done</span>');
			break;
		case 3:
			tooltip.show('<span style="font-size:24px;">Online courses that Rick has created</span>');
			break;
		case 4:
			tooltip.show('<span style="font-size:24px;">Artificial Intelligence topics</span>');
			break;
		case 5:
			tooltip.show('<span style="font-size:24px;">Contact Rick</span>');
			break;
	}
}

function KillTip( ths )
{
	ths.style.cursor='default';
	tooltip.hide();
}