menu_opened=Array;
function switch_menu(id)
{
	prvek=document.getElementById(id);
	if (menu_opened[id]==true||menu_opened[id]=='undefined')
	{
		prvek.className='';
		menu_opened[id]=false;
	} else
	{
		prvek.className='opened';
		menu_opened[id]=true;
	}
}

function fs(fname)
{
	sw=window.screen.width;
	sh=window.screen.height;
	tp=(sh-540)/2;
	lft=(sw-720)/2;
	window.open('photo.php?fname='+fname,'foto','width=720,height=540,top='+tp+',left='+lft);
}