js 遮罩效果

 -------------------------------tipswindown.js------------------------------

///-------------------------------------------------------------------------
//jQuery弹出窗口 By Await [2009-11-22]
//--------------------------------------------------------------------------
/*参数：[可选参数在调用时可写可不写,其他为必写]
----------------------------------------------------------------------------
    title:    窗口标题
  content:  内容(可选内容为){ text | id | img | url | iframe }
        内容宽度
   height:    内容高度
     drag:  是否可以拖动(ture为是,false为否)
     time:    自动关闭等待的时间，为空是则不自动关闭
   showbg:    [可选参数]设置是否显示遮罩层(0为不显示,1为显示)
  cssName:  [可选参数]附加class名称
 ------------------------------------------------------------------------*/
 //示例:
 //------------------------------------------------------------------------
 //simpleWindown("例子","text:例子","500","400","true","3000","0","exa")
 //------------------------------------------------------------------------
var showWindown = true;
var templateSrc = "http://www.7daysinn.cn"; //设置loading.gif路径
function tipsWindown(title,content,width,height,drag,time,showbg,cssName,backcall) {
    $("#windown-box").remove(); //请除内容
    var width = width>= 950?this.width=950:this.width=width;        //设置最大窗口宽度
    var height = height>= 527?this.height=527:this.height=height;  //设置最大窗口高度
    if(showWindown == true) {
        var simpleWindown_html = new String;
            simpleWindown_html = "<div id="windownbg" style="height:"+$(document).height()+"px;filter:alpha(opacity=0);opacity:0;z-index: 999901"></div>";
            simpleWindown_html += "<div id="windown-box">";
            simpleWindown_html += "<div id="windown-title"><h2></h2><span id="windown-close">关闭</span></div>";
            simpleWindown_html += "<div id="windown-content-border"><div id="windown-content"></div></div>"; 
            simpleWindown_html += "</div>";
            $("body").append(simpleWindown_html);
            show = false;
    }
    contentType = content.substring(0,content.indexOf(":"));
    content = content.substring(content.indexOf(":")+1,content.length);
    switch(contentType) {
        case "text":
        $("#windown-content").html(content);
        break;
        case "id":
        $("#windown-content").html($("#"+content+"").html());
        break;
        case "img":
        $("#windown-content").ajaxStart(function() {
            $(this).html("<img src='"+templateSrc+"/images/loading.gif' class='loading' />");
        });
        $.ajax({
            error:function(){
                $("#windown-content").html("<p class='windown-error'>加载数据出错...</p>");
            },
            success:function(html){
                $("#windown-content").html("<img src="+content+" alt='' />");
            }
        });
        break;
        case "url":
        var content_array=content.split("?");
        $("#windown-content").ajaxStart(function(){
            $(this).html("<img src='"+templateSrc+"/images/loading.gif' class='loading' />");
        });
        $.ajax({
            type:content_array[0],
            url:content_array[1],
            data:content_array[2],
            error:function(){
                $("#windown-content").html("<p class='windown-error'>加载数据出错...</p>");
            },
            success:function(html){
                $("#windown-content").html(html);
                if(backcall)
                    backcall();
            }
        });
        break;
        case "iframe":
        $("#windown-content").ajaxStart(function(){
            $(this).html("<img src='"+templateSrc+"/images/loading.gif' class='loading' />");
        });
        $.ajax({
            error:function(){
                $("#windown-content").html("<p class='windown-error'>加载数据出错...</p>");
            },
            success:function(html){
                $("#windown-content").html("<iframe src=""+content+"" width="100%" height=""+parseInt(height)+"px"+"" scrolling="auto" frameborder="0" marginheight="0" marginwidth="0"></iframe>");
            }
        });
    }
    $("#windown-title h2").html(title);
    if(showbg == "true") {$("#windownbg").show();}else {$("#windownbg").remove();};
    $("#windownbg").animate({opacity:"0.5"},"normal");//设置透明度
    $("#windown-box").show();
    if( height >= 527 ) {
        $("#windown-title").css({(parseInt(width)+22)+"px"});
        $("#windown-content").css({(parseInt(width)+17)+"px",height:height+"px"});
    }else {
        $("#windown-title").css({(parseInt(width)+10)+"px"});
        $("#windown-content").css({width+"px",height:height+"px"});
    }
    var    cw = document.documentElement.clientWidth,ch = document.documentElement.clientHeight,est = document.documentElement.scrollTop; 
    var _version = $.browser.version;
    if ( _version == 6.0 ) {
        $("#windown-box").css({left:"50%",top:(parseInt((ch)/2)+est)+"px",marginTop: -((parseInt(height)+53)/2)+"px",marginLeft:-((parseInt(width)+32)/2)+"px",zIndex: "999999"});
    }else {
        $("#windown-box").css({left:"50%",top:"50%",marginTop:-((parseInt(height)+53)/2)+"px",marginLeft:-((parseInt(width)+32)/2)+"px",zIndex: "999999"});
    };
    var Drag_ID = document.getElementById("windown-box"),DragHead = document.getElementById("windown-title");
        
    var moveX = 0,moveY = 0,moveTop,moveLeft = 0,moveable = false;
        if ( _version == 6.0 ) {
            moveTop = est;
        }else {
            moveTop = 0;
        }
    var    sw = Drag_ID.scrollWidth,sh = Drag_ID.scrollHeight;
        DragHead.onmouseover = function(e) {
            if(drag == "true"){DragHead.style.cursor = "move";}else{DragHead.style.cursor = "default";}
        };
        DragHead.onmousedown = function(e) {
        if(drag == "true"){moveable = true;}else{moveable = false;}
        e = window.event?window.event:e;
        var ol = Drag_ID.offsetLeft, ot = Drag_ID.offsetTop-moveTop;
        moveX = e.clientX-ol;
        moveY = e.clientY-ot;
        document.onmousemove = function(e) {
                if (moveable) {
                e = window.event?window.event:e;
                var x = e.clientX - moveX;
                var y = e.clientY - moveY;
                    if ( x > 0 &&( x + sw < cw) && y > 0 && (y + sh < ch) ) {
                        Drag_ID.style.left = x + "px";
                        Drag_ID.style.top = parseInt(y+moveTop) + "px";
                        Drag_ID.style.margin = "auto";
                        }
                    }
                }
        document.onmouseup = function () {moveable = false;};
        Drag_ID.onselectstart = function(e){return false;}
    }
    $("#windown-content").attr("class","windown-"+cssName);
    if( time == "" || typeof(time) == "undefined") {
        $("#windown-close").click(function() {
            showselect('t123_')
            $("#windownbg").remove();
            $("#windown-box").fadeOut("slow",function(){$(this).remove();});
        });
    }else { 
        setTimeout(closeWindown,time);
    }
    hideselect('t123_');
}
var closeWindown = function() {
    showselect('t123_');
    $("#windownbg").remove();
    $("#windown-box").fadeOut("slow",function(){$(this).remove();});
}
function hideselect(per)
{
    var _version = $.browser.version;
    if ( _version == 6.0 ) {
        $("select",document).each(function(){
            if($(this).attr('name'))
            {
                if($(this).attr('name').substring(0,5)==per)
                {
                    name = $(this).attr('name').substring(5);
                    $(this).attr('name',name);
                    $(this).css('display','');
                }
                if($(this).css('display')!='none')
                {
                    name = per+$(this).attr('name');
                    $(this).attr('name',name);
                }
                $(this).css('display','none');
            }
        });
    }
}
function showselect(per)
{
    var _version = $.browser.version;
    if ( _version == 6.0 ) {
        $("select",document).each(function(){
            if($(this).attr('name'))
            {
                if($(this).attr('name').substring(0,5)==per)
                {
                    name = $(this).attr('name').substring(5);
                    $(this).attr('name',name);
                    $(this).css('display','');
                }
            }
        });
    }
}
---------------------------style.css----------------------------------
<style type="text/css">

.mainlist{padding:10px;}
.mainlist div {margin:0 5px 0 0;font-family:"宋体";font-size:12px;font-weight:400;color:#ddd;}
.btnbox{text-align:center;height:30px;padding-top:10px;background:#ECF9FF;}
#windownbg{display:none;position:absolute;100%;height:100%;background:#000;top:0;left:0;}
#windown-box{position:fixed;_position:absolute;border:5px solid #E9F3FD;background:#FFF;text-align:left;}
#windown-title{position:relative;height:30px;border:1px solid #A6C9E1;overflow:hidden;background:url(/images/tipbg.png) 0 0 repeat-x;}
#windown-title h2{position:relative;left:10px;top:5px;font-size:14px;color:#666;}
#windown-close{position:absolute;right:10px;top:8px;10px;height:16px;text-indent:-10em;overflow:hidden;background:url(/images/tipbg.png) 100% -49px no-repeat;cursor:pointer;}
#windown-content-border{position:relative;top:-1px;border:1px solid #A6C9E1;padding:5px 0 5px 5px;}
#windown-content img,#windown-content iframe{display:block;}
#windown-content .loading{position:absolute;left:50%;top:50%;margin-left:-8px;margin-top:-8px;}
</style>

---------------------------------html------------------------------
<script type="text/javascript">
    /*
    *弹出本页指定ID的内容于窗口
    *id 指定的元素的id
    *title:    window弹出窗的标题
    *    窗口的宽,height:窗口的高
    */
    function showTipsWindown(title, id, width, height) {
        tipsWindown(title, "id:" + id, width, height, "true", "", "true", id);
    }

    function confirmTerm(s) {
        parent.closeWindown();
        if (s == 1) {
            parent.document.getElementById("isread").checked = true;
        }
    }

//弹出层调用
    function popTips() {
        showTipsWindown("jQuery弹出层", 'simTestContent', 600, 255);
        $("#isread").attr("checked", false);
    }
</script>

<div style="display:none;">
<div id="simTestContent" class="simScrollCont">
    <div class="mainlist" >
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</div>
     </div>
        </div><!--simTestContent end-->
    </div>