jQuery弹出层插件简化版代码下载

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代码如下:
String.prototype.replaceAll = function(s1,s2){ 
return this.replace(new RegExp(s1,"gm"),s2); 
};
(function($){ 
/* 
* $-layer 0.1 - New Wave Javascript 
* 
* Copyright (c) 2008 King Wong 
* $Date: 2008-10-09 $
*/
var ___id___ = "";
var ___settings___ = {};
var isMouseDown = false;

var currentElement = null;

var dropCallbacks = {};
var dragCallbacks = {};

var bubblings = {};

var lastMouseX;
var lastMouseY;
var lastElemTop;
var lastElemLeft;

var dragStatus = {};

var holdingHandler = false;

$.getMousePosition = function(e){
var posx = 0;
var posy = 0;

if (!e) var e = window.event;

if (e.pageX || e.pageY) {
posx = e.pageX;
posy = e.pageY;
}
else if (e.clientX || e.clientY) {
posx = e.clientX + document.body.scrollLeft + document.documentElement.scrollLeft;
posy = e.clientY + document.body.scrollTop + document.documentElement.scrollTop;
}
return { 'x': posx, 'y': posy };
};
$.updatePosition = function(e) {
var pos = $.getMousePosition(e);

var spanX = (pos.x - lastMouseX);
var spanY = (pos.y - lastMouseY);
var _top = (lastElemTop + spanY) > 0 ? (lastElemTop + spanY) : 0;
var _left = (lastElemLeft + spanX) > 0 ? (lastElemLeft + spanX) : 0;
$("#"+___id___).css("top", _top);
$("#"+___id___).css("left", _left);
};

$.fn.ondrag = function(callback){
return this.each(function(){
dragCallbacks[this.id] = callback;
});
};
$.fn.ondrop = function(callback){
return this.each(function(){
dropCallbacks[this.id] = callback;
});
};

$.fn.dragOff = function(){
return this.each(function(){
dragStatus[this.id] = 'off';
});
};

$.fn.dragOn = function(){
return this.each(function(){
dragStatus[this.id] = 'on';
});
};
$.extend({
layerSettings:{
id:"layerdiv",
width:220,
height:220,
templete:'<div style="height:20px; width:@width@px; background-color:#777777;"><span id="@moveid@" style="position:relative; left:0px; top:0px; height:20px; width:100px;"><span id="@titleid@">@title@</span></span><span class="layerclose" style="position:relative; top:0px; float:right; right:20px; color:red;">close</span></div><div style="border:solid #ff0000 1px; width:@width@px; height:@height@px;"><div style="width:100%; height:100%; background-color:#ffffff;" id="@contentid@"></div></div>',
content:'',
title:'',
isbg:true,
opacity:0.3
},
layerSetup: function( settings ) {
$.extend( $.layerSettings, settings );
___settings___[settings.id] = settings;
___id___ = settings.id;
},
layershow:function(){
var __bw = $("body").width();
var __bh = $("body").height() > $(window).height() ? $("body").height() : $(window).height();
var _width = $.layerSettings.width;
var _height = $.layerSettings.height;

if(document.getElementById(___id___)) return;
var _moveid = ___id___ + "_move";
var _titleid = ___id___ + "_title";
var _contentid = ___id___ + "_content";
var _cssurl = $.layerSettings.cssurl;
var opacity = $.layerSettings.opacity;
__index = $.layermaxindex();
var __left = (__bw - _width) > 0 ? (__bw - _width)/2 : 0;
var __top = 100;
var __bgDiv = '<div id="'+___id___+'_background" style="background:#000000; filter:alpha(opacity='+(opacity*100)+'); opacity: '+opacity+'; width:'+__bw+'px; height:'+__bh+'px; z-index:'+(__index++)+'; position:absolute; left:0px; top:0px;"></div>';
if($.layerSettings.isbg)
{
$("body").append(__bgDiv);
}
$("body").append('<div id="'+___id___+'" style="z-index:'+__index+';position:absolute; left:'+__left+'px; top:'+__top+'px;"></div>');
var _templete = $.layerSettings.templete;
var __templete = _templete.replaceAll("@width@",_width).replaceAll("@height@",_height).replaceAll("@titleid@",_titleid).replaceAll("@contentid@",_contentid).replaceAll("@title@",jQuery.layerSettings.title).replaceAll("@moveid@",_moveid);
$("#"+___id___).append(__templete);
$("#"+_contentid).append($.layerSettings.content);
$("#"+_titleid).append($.layerSettings.title);
var idd = ___id___;
$(".layerclose").bind("click",function()
{
$.layerclose(idd);
});
$("#"+___id___).bind("click",function()
{
var id = this.id;
$.layerSetup(___settings___[id]);
$(this).css("z-index",$.layermaxindex());
});
$(document).bind("click",function(e)
{
var pos = $.getMousePosition(e);

});
$(document).mousemove(function(e){
if(isMouseDown && dragStatus[currentElement.id] != 'false'){
$.updatePosition(e);
if(dragCallbacks[currentElement.id] != undefined){
dragCallbacks[currentElement.id](e, currentElement);
}
return false;
}
});
$(document).mouseup(function(e){
if(isMouseDown && dragStatus[currentElement.id] != 'false'){
isMouseDown = false;
if(dropCallbacks[currentElement.id] != undefined){
dropCallbacks[currentElement.id](e, currentElement);
}
return false;
}
});
(function(){
bubblings[___id___] = true;

dragStatus[___id___] = "on";

//setHandler
bubblings[this.id] = true;

dragStatus[_moveid] = "handler";

$("#"+_moveid).css("cursor", "move");

$("#"+_moveid).mousedown(function(e){
var id = this.id.replace("_move","");
___id___ = id;
$("#"+id).css("z-index",$.layermaxindex());
$.layerSetup(___settings___[id]);
if((dragStatus[___id___] == "off") || (dragStatus[___id___] == "handler" && !holdingHandler))
return bubblings["#"+___id___];

isMouseDown = true;
currentElement = $("#"+___id___);

var pos = $.getMousePosition(e);
lastMouseX = pos.x;
lastMouseY = pos.y;

lastElemTop = document.getElementById(___id___).offsetTop;
lastElemLeft = document.getElementById(___id___).offsetLeft;

$.updatePosition(e);
holdingHandler = true;
});

$("#"+_moveid).mouseup(function(e){
holdingHandler = false;
});
//end setHandler
})();
},
layerclose:function(__id)
{
$("#"+__id+"_background").remove();
$("#"+__id).remove();
},
layermaxindex:function()
{
var ___index = 0;
$.each($("*"),function(i,n){
var __tem = $(n).css("z-index");
if(__tem>0)
{
if(__tem > ___index)
{
___index = __tem + 1;
}
}
});
return ___index;
}
});
})(jQuery);

使用方法：
（1）显示层：
代码如下:
function show()
{
$.layerSetup({
id:"abc",//弹出层的ID
title:"test",//标题
content:'test',//内容
isbg:false,//是否显示背景遮照层
opacity:0.3,//背景遮照层的透明度，值越大透明度越低，0为完全透明，1为不透明
templete:'<div class="showwint_mini_title"><span class="showwint_mini_close_btn"><a href="javascript:void(null);" class="layerclose"></a></span><span class="showwint_mini_title_content" id="@moveid@"><span id="@titleid@"></span></span></div><div class="showwint_mini_content"><div class="showwint_mini_content_content" id="@contentid@"></div></div>'//模板
});
$.layershow();
}

（2）关闭层：
代码如下:
$.layerclose("弹出层的ID");

注意：那个如果你的模板有CSS文件的话，就要直接引入到本页面就行了，这个简化版不能在别的框架弹出层的，所以也就没有了那个cssurl属性了，也没有target 属性了。
源码下载http://xiazai.jb51.net/jslib/jquery-layer.rar

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