// JavaScript Document
function $() {
	var elements = new Array();
	for (var i = 0; i < arguments.length; i++) {
		var element = arguments[i];
		if (typeof element == 'string')
			element = document.getElementById(element);
		if (arguments.length == 1)
			return element;
		elements.push(element);
	}
	return elements;
}

function getElementsByClass(searchClass,node,tag) {
	var classElements = new Array();
	if ( node == null )
		node = document;
	if ( tag == null )
		tag = '*';
	var els = node.getElementsByTagName(tag);
	var elsLen = els.length;
	var pattern = new RegExp('(^|\\s)'+searchClass+'(\\s|$)');
	for (i = 0, j = 0; i < elsLen; i++) {
		if ( pattern.test(els[i].className) ) {
			classElements[j] = els[i];
			j++;
		}
	}
	return classElements;
}

function contentNavigate(  pageId, menuId )
{
	var targetPage = $("page_" + pageId);
	if( !targetPage ) 
		return;
	var docPages = getElementsByClass("page",null,"DIV");
	if( docPages )
	{
		if( docPages.length )
		{
			for( var i=0; i<docPages.length; i++ )
			{
				docPages[i].style.display = "none";
			}
		}
	}
	targetPage.style.display = "block";
	
	if ( !menuId ) return;
	var docSubmenu = $("submenu");
	var targetSubmenu = $(menuId);
	if( ! targetSubmenu ) return;
	var docSubmenus = docSubmenu.getElementsByTagName("LI");
	for( var i=0; i< docSubmenus.length; i++ )
	{
		docSubmenus[i].className = "";
	}
	targetSubmenu.className = "selected";
	
}