// function: show / hide menu
function showMenu(menuId) {
	document.getElementById(menuId).style.display="";
}

function hideMenu(menuId) {
	document.getElementById(menuId).style.display="none";
}

//popup functionality
window.onerror=null;
var win = null;
function PopWindow(mypage,myname) {
	//closePopWin();
	winprops = 'height=500,width=820,top=30,left=0,scrollbars=1,resizable=1,status=1';
	win = window.open(mypage, myname, winprops);
	}
function SizedPopWindow(mypage,myname,w,h) {
	//closePopWin();
	winprops = 'height='+h+',width='+w+',top=30,left=0,scrollbars=1,resizable=1,status=1';
	win = window.open(mypage, myname, winprops);
	}
function closePopWin() {
	if(win != null) { 
		if(!win.closed) { 
			win.close();
			win = null;
			} else {
			win = null;
			}
		}	
	}

function $() {
	if (arguments.length == 1) return get$(arguments[0]);
	var elements = [];
	$c(arguments).each(function(el){
		elements.push(get$(el));
	});
	return elements;
	function get$(el){
		if (typeof el == 'string') el = document.getElementById(el);
		return el;
	}
}


function addLoadEvent(func) {
  var oldonload = window.onload;
  if (typeof window.onload != 'function') {
    window.onload = func;
  } else {
    window.onload = function() {
      oldonload();
      func();
    }
  }
}