//常用JS，在网页加载完毕后执行JS.
function[color=red] addLoadEvent(func)[/color] {
var oldonload = window.onload;
if (typeof window.onload != 'function') {
window.onload = func;
} else {
window.onload = function() {
oldonload();
func();
}
}
}
实现动态插入html元素，DOM只提供 insertBefore();
function [color=red]insertAfter(newElement,targetElement)[/color] {
var parent = targetElement.parentNode;
if (parent.lastChild == targetElement) {
parent.appendChild(newElement);
} else {
parent.insertBefore(newElement,targetElement.nextSibling);
}
}
