/**
 * @author georgewing
 */

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

function insertAfter(newElement, targetElement) {
	var parent = targetElement.parentNode;
	if(parent.lastChild == targetElement) {
		parent.appendChild(newElement);
	}
	else {
		parent.insertBefore(newElement, targetElement.nextSibling);
	}
}

function addClass(element, value) {
	if(!element.className) {
		element.className = value;
	}
	else {
		newClassName = element.className;
		newClassName += " ";
		newClassName += value;
		element.className = newClassName;
	}
}

function popup() {
	if(!document.getElementsByTagName || !document.getElementsByTagName("a")) return false;
	
	a = document.getElementsByTagName("a");
	for(i=0;i<a.length;i++) {
		if(a[i].getAttribute("rel") && a[i].getAttribute("rel") == "external") {
			a[i].onclick = function() {
				window.open(this.getAttribute('href'));
				return false;
			};
		}
	}
}
addLoadEvent(popup);


function resizeHeight() {
	if(!document.getElementsByTagName) return false;
	var div = document.getElementsByTagName("div");
	if(!div) return false;
	for(var i=0;i<div.length;i++) {
		
		if(div[i].parentNode.className.indexOf("Col") != -1) {
			col = div[i].parentNode;
		}
		if(div[i].className.indexOf("Col1") != -1) {
			col1 = div[i];

			if(col.offsetHeight > col1.offsetHeight){
				col1.style.height = col.offsetHeight +"px";
			}
			else {
				col.style.height = col1.offsetHeight +"px";
			}
		}
		else if(div[i].className.indexOf("Col2") != -1) {
			col1 = div[i];

			if(col.offsetHeight > col1.offsetHeight){
				col1.style.height = col.offsetHeight +"px";
			}
			else {
				col.style.height = col1.offsetHeight +"px";
			}
		}
	}
	
}
addLoadEvent(resizeHeight);

function prepareHighlight() {
	highlight('nav_main');
}
function highlight(id) {
	if(!document.getElementById||!document.getElementsByTagName) return false;
	var nav = document.getElementById(id);
	var link = nav.getElementsByTagName("a");
	for(var i=0; i<link.length; i++) {
		var currurl = location.href;
		var linkurl = link[i].href;
		if(linkurl == "") {
			linkurl = null;
		}
		if(currurl.indexOf(linkurl) != -1) {
			link[i].className = "current";
		}
		// hide focus for IE's browser
		link[i].hideFocus = "true";
	}
}
addLoadEvent(prepareHighlight);