2.浏览器窗口缩小的时候，弹出框始终是居中的
3.按ESC间，可以关闭窗口
*/
(function($) {
var css='<style type=”text/css”>* {margin: 0;padding: 0;}#bg{background-color: #000; position: absolute; left:0; top:0;opacity: 0.5;filter:alpha(opacity=50);} #flagBox {position: absolute;border: 1px solid #000;background-color: #fff;z-index:2000;}#titleBox {padding: 5px;background-color:#fc0; overflow:hidden;} #titleBox p {font-weight: bold;} #titleBox a {float: right;} #htmlCode {padding: 10px;} span {font-size: 12px; color: #f00; margin-left: 10px;}</style>’;
$(“head”).append(css);
$.fn.popwin= function(options) {
var settings={
element: “element”, //哪一个弹出框，可以是id，或者是class
width: 400,
height: 200,
title: “title” //弹出框的title
}
var s=$.extend(settings,options);
var htmlCode=$(s.element).html();
$(s.element).remove();
$.a={
//设置背景的宽和高
setBg: function() {
var bh=$(“body”).height(),wh=$(window).height(),ww=$(window).width();
if(bh>wh) {
wh=bh;
}
$(“#bg”).css({
width: ww,
height: wh
});
},
//设置弹出框居中
setFlag: function() {
var l=(document.documentElement.clientWidth-s.width)/2+”px”,
t=(document.documentElement.clientHeight-s.height)/2+”px”;
$(“#flagBox”).css({
width: s.width,
height: s.height,
left: l,
top: t
});
},
//弹出框关闭
setClose: function() {
$(“#container”).remove();
}
};
var html='<div id=”container”><div id=”bg”></div><div id=”flagBox”><div id=”titleBox”><a href=”javascript:void(0)”>close</a><p>’+s.title+'</p></div><div id=”htmlCode”>’+htmlCode+'</div></div></div>’;
$(window).resize(function() {//调解窗口的大小
$.a.setFlag();
});
return this.each(function() {
$(this).bind(“click”,function(){
$(“body”).append(html);
$(“#titleBox a”).click(function() {
$.a.setClose();
});
$.a.setBg();
$.a.setFlag();
});
$(document).keydown(function(event) {
if(event.which==”27″) {
$.a.setClose();
}
});
});
};
})(jQuery)
function isEmail(str) {
var reg = /^([a-zA-Z0-9_-])+@+([a-zA-Z0-9_-])+(.[a-zA-Z0-9_-])/;
if(reg.exec(str)) {
return false;
}else {
return true;
}
}
function check() {
var flag=true;
$(“#nameErr”).html(”);
$(“#passwordErr”).html(”);
$(“#emailErr”).html(”);
var username=$(“#username”).val();
var password=$(“#password”).val();
var email=$(“#email”).val();
if(username==”” || username==null) {
