var timer1;
var timer2;

function over(nr)
{
	window.clearTimeout(timer1);
	window.clearTimeout(timer2);

	hover(nr, true);

	if(document.getElementById('s'+nr) && (document.getElementById('s'+nr).style.visibility == '' || document.getElementById('s'+nr).style.visibility == 'hidden')) {
		ausblenden();
		einblenden('s'+nr);
	}
}

function out(nr)
{
	timer1 = window.setTimeout('ausblenden()', 150);
	timer2 = window.setTimeout('hover('+nr+', false)', 150);
}

function einblenden(node)
{
	document.getElementById(node).style.visibility = 'visible';
}

function ausblenden()
{
	var ul;
	ul = document.getElementsByTagName('ul');
	for(var n=0; n<ul.length; n++) {
		if(ul[n].className == 'prNavSub') {
			ul[n].style.visibility = 'hidden';
		}
	}
}

function wrapper(nr, over)
{
	window.clearTimeout(timer2);
	ausblenden();
	hover(nr, over)
}

function hover(nr, over)
{
	var ul = document.getElementsByTagName('li');
	for(var n=0; n<ul.length; n++) {
		if(ul[n].className == 'prNavTopItem') {
			if(nr == 1) {
				//ul[n].style.background = "url('/biomed/sys/pix/menu_vr.gif') no-repeat right";
			}
			else {
				//ul[n].style.background = "url('/biomed/sys/pix/menu_vr.gif') no-repeat right";
			}
			//ul[n].childNodes[0].style.color = '#000000';

			if(over==true) {
				if(ul[n].id == 'o'+nr) {
					if(nr == 1) {
						//ul[n].style.background = "url('/biomed/sys/pix/menu_active_1st.gif') no-repeat left";
					}
					else {
						//ul[n].style.background = "url('/biomed/sys/pix/menu_active.gif') no-repeat right";
					}
					//ul[n].childNodes[0].style.color = '#ffffff';
				}
			}
		}
	}
}