dom = (document.getElementById)? true : false;
ie4 = (document.all && !dom)? true : false;
nn4 = (document.layers)? true : false;
var currMenuOpened = false;
var currMenuId = false;

function Switch(p) {
	if (dom || ie4) {
		if (!currMenuOpened && currMenuId) {
			currMenuOpened = (dom) ? document.getElementById('p'+currMenuId) : document.all['p'+currMenuId];
			currMenuId = false;
		}
		var currElement = (dom) ? document.getElementById(p) : document.all[p];
		var curImg = (dom) ? document.getElementById(p+'img') : document.all[p+'img'];
		
		if (currMenuOpened && currMenuOpened.id == p) {
			currElement.style.display = 'none';
			curImg.style.backgroundImage = 'url(/_com/mainmenu_marker.png)';
			currMenuOpened = false;
		} else {
			if (currMenuOpened) {
				currMenuOpened.style.display = 'none';
				document.getElementById(currMenuOpened.id+'img').style.backgroundImage = 'url(/_com/mainmenu_marker.png)';
			}
			currElement.style.display = 'block';
			curImg.style.backgroundImage = 'url(/_com/mainmenu_marker_active.png)';
			currMenuOpened = currElement;
		}
		return false;
	} else return true;
}

/*function Switch(p) {
	if (dom || ie4) {
		if (!currMenuOpened && currMenuId) {
			currMenuOpened = (dom) ? document.getElementById('p'+currMenuId) : document.all['p'+currMenuId];
			currMenuId = false;
		}
		var currElement = (dom) ? document.getElementById(p) : document.all[p];
		if (currMenuOpened && currMenuOpened.id == p) {
			currElement.style.display = 'none';
			currMenuOpened = false;
		} else {
			if (currMenuOpened) {
				currMenuOpened.style.display = 'none';
			}
			currElement.style.display = 'block';
			currMenuOpened = currElement;
		}
		return false;
	} else return true;
}*/