jq實現網頁個性title

<!DOCTYPE html>

<html content="text/html; charset=UTF-8">

<title>tooltip</title>

<script src="jquery-1.10.2.min.js" type="text/javascript"></script>

</head>

<body>

<style type="text/css">

#tooltip{

    position:absolute;

    border:1px solid #333;

    background:#333333;

    padding:10px;

    color:#e5e6f0;

    display:none;

    z-index:30;

}

div{ width:100px; height:100px; background:#000; display:inline-block;}

a{ margin:10px; float:left;}

</style>

<a href="" class="tooltip">

<div title="No.1  第一行&lt;br /&gt;

第二行&lt;br /&gt;

第三行"></div>

</a>

<a href="" class="tooltip">

<div  title="No.2  第一行&lt;br /&gt;

第二行&lt;br /&gt;

第三行"></div>

</a>

<script type="text/javascript">

(function($){

    $.fn.tjtooltip = function(set) {

        var settings = $.extend({

            xoffset : 10,

            yoffset : 20,

            tooltip : 'tooltip'

        } , set);

        var tchild = null,

            tipo   = null,

            d_t    = '';

            WinW   = $(window).width(),

            leftPx = 0,

            tipo_width = 0;

        this.hover(function(e){

            tchild = $(this).children()[0];

            d_t = tchild.title;

            tchild.title = '';

            tipo = document.createElement('p');

            tipo.id = settings.tooltip;

            tipo.innerHTML = d_t;

            document.body.appendChild(tipo);

            tipo_width = tipo.offsetWidth;

            leftPx = ( e.pageX + settings.yoffset + tipo_width ) > WinW ?

                     ( e.pageX - settings.yoffset - tipo_width ) : ( e.pageX + settings.yoffset );

            tipo.style.top = ( e.pageY - settings.xoffset ) + "px";

            tipo.style.left= leftPx + "px";

            $("#"+settings.tooltip).fadeIn('fast');

            },

            function(){

                tchild.title = d_t;

                $("#"+settings.tooltip).remove();

            }

        );

        this.mousemove(function(e){

            if(!tipo){return false;}

            leftPx = ( e.pageX + settings.yoffset + tipo_width ) > WinW ?

                     ( e.pageX - settings.yoffset - tipo_width ) : ( e.pageX + settings.yoffset );

            tipo.style.top = ( e.pageY - settings.xoffset ) + "px";

            tipo.style.left= leftPx + "px";

        });

        return this;

    }

})(jQuery);

$('a.tooltip').tjtooltip();

</script>

</body></html>