function aktiv(menupont) {
		var parnod = document.getElementById("menu");
		var i=1;
		var lmenu=1;
		var z=1;
		var cn=parnod.childNodes;
		var ln=parnod.lastNodes; 
		for (z=1; z<cn.length; z++)
			{
				if ((/[0-9]+/.test(cn[z].id.substring(1))) && (cn[z].id.substring(1)>lmenu))
					{lmenu=parseInt(cn[z].id.substring(1));}		
			}
		while ((cn[i].id!="menu_right")) 
			{
			 while (!cn[i].id) {i++}
				if ((cn[i].id!="m"+menupont.toString()) && (cn[i].id!="menu_left") )
					{	
						cn[i].style.backgroundPosition='bottom left';
						cn[i].style.backgroundColor='#eaeff5';
					}
				i++;
			 while (!cn[i].id) {i++}
			}
		if (1==menupont)
			{document.getElementById('menu_left').style.backgroundPosition='right top';}
		else
			{document.getElementById('menu_left').style.backgroundPosition='left top';}
		if (lmenu==menupont)
			{document.getElementById('menu_right').style.backgroundPosition='right top';}
		else
			{document.getElementById('menu_right').style.backgroundPosition='left top';}
		if (document.getElementById("m"+menupont)) {	
			document.getElementById("m"+menupont).style.backgroundPosition='center bottom';
			document.getElementById("m"+menupont).style.backgroundColor='#efefaa'; }}

function hover(menupont, bg) {
	menupont.style.backgroundColor=bg;
}

function combo_openclose(combo_number) {
	if (document.getElementById(combo_number).style.display != "block") {
		document.getElementById(combo_number).style.display="block";
	} else {
		document.getElementById(combo_number).style.display="none";
	}
}

function change_site(opt) {
	document.getElementById('enter_site').style.display="none";
	document.getElementById('main_site').style.display="none";
	document.getElementById('other_doc').style.display="none";
//	document.getElementById('line_menu').style.backgroundImage="none";
	if (opt=='main_site') {
		document.getElementById('main_site').style.display="block";
	} else if (opt=='other_doc') {
		document.getElementById('other_doc').style.display="block";
	} else if (opt=='enter_site') {
		document.getElementById('enter_site').style.display="block";
//		document.getElementById('line_menu').style.backgroundImage="url(./site_img/avill.gif)";
	}
}

function hide_bigimage() {
	document.getElementById('od_img').style.display='none';
	document.getElementById('other_doc').style.display='none';
}