function show(id, list) {
	if (document.getElementById(id).style.display == 'block')
	{
		document.getElementById(id).style.display = 'none';
		document.getElementById(id).style.visibility = 'hidden';		
	}
	else
	{
		document.getElementById(id).style.display = 'block';
		document.getElementById(id).style.visibility = 'visible';
	}
}

function arrow(id, im){
	if (document.getElementById(id).style.display == 'block')
	{
	   document.images[im].src='/images/picto/close.gif'
	}
	else
	{
		document.images[im].src='/images/picto/open.gif'
	}
}

function prel_arr(){
   str = '/images/picto/close.gif';
   b[1] = new Image();
   b[1].src = str;
}