var DOM = document.getElementById ? true : false;
var ie = document.all ? true : false;
var nn4 = document.layers ? true : false;

var mactive = 0; 

//getting element
function getElement(name) {
	if (ie) { return document.all[name]; }
	 else if(DOM){ return document.getElementById(name); }
		  else { return document.name; }
}

function menuOvr(num) {
	menuOut(mactive);
	var menu_top = getElement("sep_"+num);
	var item = getElement("menu_"+num);
	WriteContent(num);
	mactive = num;
	num++;
	var menu_bot = getElement("sep_"+num);
	menu_top.className = "selTop";
	menu_bot.className = "selBot";
	item.className = "selItem";
}

function menuOut(num) {
	var menu_top = getElement("sep_"+num);
	var item = getElement("menu_"+num);
	num++;
	var menu_bot = getElement("sep_"+num);
	menu_top.className = "";
	menu_bot.className = "";
	item.className = "menuItem";
}

function WriteContent(num){
  var where =  getElement("centColCont");
  var from =  getElement("menuRText_" + num);
	where.innerHTML =	from.innerHTML; 
}

function CollapseElem(elemID){
  var elem = getElement(elemID);
	if (elem){
	  elem.style.display = (elem.style.display == "none") ? "" : "none";
	}
	return false;
}