function setNavPosition()
{
	var objBottomNav = document.getElementById('bottomnav');
	objBottomNav.style.top = setPos(0);
}

function setPos(posIE)
{
	var posOut = null;

		switch(navigator.appName)
		{
			case 'Microsoft Internet Explorer':
				posOut = posIE + 'px';
				break;
			case 'Netscape':
				posIE = posIE + 7;
				posOut = posIE + 'px';
				break;
			default:
				posOut = posIE + 'px';
		}	
					
	return posOut;	
}