function $(elem)
{
	return document.getElementById(elem);
}

window.onload = function()
{
	var akt = 0;
	var menuitem = new Array();
	menuitem[1] = $('nav-' + 1);
	menuitem[1].onmouseover = function(){ document.body.className = 'section-' + 1; }
	
	menuitem[2] = $('nav-' + 2);
	menuitem[2].onmouseover = function(){ document.body.className = 'section-' + 2; }
	
	menuitem[3] = $('nav-' + 3);
	menuitem[3].onmouseover = function(){ document.body.className = 'section-' + 3; }
	
	menuitem[4] = $('nav-' + 4);
	menuitem[4].onmouseover = function(){ document.body.className = 'section-' + 4; }
	
	menuitem[5] = $('nav-' + 5);
	menuitem[5].onmouseover = function(){ document.body.className = 'section-' + 5; }
	
	if ($('nav-' + 6))
	{
		menuitem[6] = $('nav-' + 6);
		menuitem[6].onmouseover = function(){ document.body.className = 'section-' + 6; }
	}
	
	if ($('nav-' + 7))
	{
		menuitem[7] = $('nav-' + 7);
		menuitem[7].onmouseover = function(){ document.body.className = 'section-' + 7; }
	}
}