jQuery单击交互式图像映射在chrome上不起作用

Question

I have an interactive image-map on my website. The html is:

<div id="italy-map" class="affiancato verticalmenteAllineato">
    <div id="region-map">
        <img src="./Immagini/transparent.gif"  title="Clicca su una regione per vedere le cliniche!" 
             alt="Clicca su una regione per vedere le cliniche!" usemap="#ItalyMap" /> 
    </div> 
</div>

<map id="ItalyMap"> 
    <area shape="poly" data-id="1" alt="Valle d'Aosta" title="Valle de Aosta"   coords="47,56,48,76,14,86,1,65" /> 
    <area shape="poly" data-id="2" alt="Piemonte" title="Piemonte"   coords="66,34,73,46,74,67,79,84,70,94,85,106,95,122,78,133,58,128,49,153,32,154,7,136,11,119,-2,103,7,96,19,96,21,83,48,75,48,57,60,42" /> 
    <area shape="poly" data-id="3" alt="Liguria" title="Liguria"   coords="131,156,105,134,108,131,90,126,69,137,74,133,65,131,56,141,49,157,47,154,40,154,31,165,35,169,48,170,75,141,89,137,95,139" /> 
    <area shape="poly" data-id="4" alt="Lombardia" title="Lombardia"   coords="101,122,88,105,75,107,72,89,84,84,73,65,78,47,92,63,105,27,113,40,132,39,137,23,157,35,148,39,152,48,142,64,147,57,149,64,162,65,151,79,159,80,158,84,153,85,160,95,183,109,153,107,154,110,130,104,130,99,117,103,113,100,102,108,105,117" /> 
    <area shape="poly" data-id="5" alt="Trentino-Alto Adigio" title="Trentino-Alto Adige"  coords="150,64,166,66,162,73,176,70,176,63,190,51,192,59,196,47,203,50,203,43,197,37,197,29,210,27,210,19,212,26,224,20,213,12,213,-3,199,5,176,6,166,17,152,12,141,17,146,14,145,25,136,24,141,30,154,34,148,40,151,45,146,59" /> 
    <area shape="poly" data-id="6" alt="Veneto" title="Veneto"   coords="218,116,210,114,209,107,197,110,190,113,177,108,155,88,157,82,160,67,177,74,182,52,203,49,205,40,199,35,225,19,233,23,232,35,219,43,223,51,223,61,229,67,242,67,247,72,220,86,218,101,228,112" /> 
    <area shape="poly" data-id="7" alt="Friuli-Venezia Giulia" title="Friuli-Venezia Giulia"   coords="277,78,272,73,246,75,242,65,227,66,223,62,221,44,238,22,272,32,265,42,271,52,270,64,279,72" /> 
    <area shape="poly" data-id="8" alt="Emilia-Romagna" title="Emilia-Romagna"   coords="236,162,231,157,214,161,210,171,189,158,196,152,177,143,178,148,165,153,125,132,109,138,99,127,103,115,108,100,131,103,144,107,148,111,153,110,215,111,215,139" /> 
    <area shape="poly" data-id="9" alt="Toscana" title="Toscana"   coords="185,236,196,224,200,212,205,198,214,193,215,169,196,167,193,152,181,147,164,156,125,132,120,140,132,153,146,191,150,208,151,213,144,216,133,217,133,221,142,223,149,220,145,216,152,213,168,225,177,238" /> 
    <area shape="poly" data-id="10" alt="Umbria" title="Umbria"   coords="228,238,253,221,256,217,242,212,235,186,228,186,220,178,210,179,212,189,206,201,203,217,205,226,212,224,225,237" /> 
    <area shape="poly" data-id="11" alt="Lazio" title="Lazio"   coords="276,298,282,277,264,270,254,260,242,256,247,249,258,250,258,248,250,246,249,231,260,229,254,221,226,240,212,226,206,228,202,217,197,220,196,232,188,240,205,260,215,267,219,274,245,293" /> 
    <area shape="poly" data-id="12" alt="Marche" title="Marche"   coords="215,169,232,186,237,189,240,210,255,216,259,227,279,213,264,174,253,175,239,158,234,167,222,157,221,155,209,166" /> 
    <area shape="poly" data-id="13" alt="Abruzzo" title="Abruzzo"   coords="312,255,279,213,258,227,261,232,250,230,252,245,259,250,254,251,246,251,245,255,263,267,284,274,289,272,289,269,296,262,301,267,301,271,305,270" /> 
    <area shape="poly" data-id="14" alt="Molise" title="Molise"  coords="328,261,315,257,305,271,302,268,297,264,290,270,291,272,283,275,284,284,284,288,285,292,290,281,303,289,321,283,318,278,326,274" /> 
    <area shape="poly" data-id="15" alt="Campania" title="Campania"  coords="342,360,349,346,331,316,341,312,342,305,331,301,331,298,320,283,301,290,290,282,286,289,274,298,285,317,295,317,303,329,316,328,321,348" /> 
    <area shape="poly" data-id="16" alt="Puglia" title="Puglia"   coords="329,261,360,255,368,266,367,272,359,280,364,289,411,310,420,319,440,325,445,331,452,338,454,346,454,359,450,370,438,363,427,342,413,344,399,331,394,341,385,334,386,322,373,321,365,311,363,309,354,306,360,308,362,306,353,297,354,299,341,305,330,296,320,278,327,277" /> 
    <area shape="poly" data-id="17" alt="Basilicata" title="Basilicata"   coords="351,361,343,356,351,346,335,317,342,313,343,306,359,304,361,310,358,312,375,321,387,324,387,336,395,339,386,351,376,350,372,363,361,363,359,359" /> 
    <area shape="poly" data-id="18" alt="Calabria" title="Calabria"  href="#a" coords="363,466,345,462,345,447,353,438,356,422,367,415,361,405,363,391,352,364,355,357,372,364,378,349,383,351,378,371,404,387,404,410,387,416,381,428,385,433" /> 
    <area shape="poly" data-id="19" alt="Sardegna" title="Sardegna"   coords="92,418,96,400,110,406,121,377,117,346,124,329,109,292,91,302,75,313,62,310,58,323,68,339,66,362,72,364,61,402,78,416" /> 
    <area shape="poly" data-id="20" alt="Sicilia" title="Sicilia"   coords="322,529,299,521,286,507,271,505,237,482,228,481,219,472,226,451,238,453,249,447,269,456,296,459,309,449,323,453,340,445,344,450,329,474,325,489,334,508,332,513" /> 
</map>

The above html is affected by the following css:

#italy-map {
   width: 458px;
   height: 531px;
   background:url(../Immagini/cartinaItalia.gif) no-repeat;
   z-index:100;
   margin: 0px 0px 35px 0%;
}

#region-map{
   width: 100%;
   height: 100%;
   z-index:105;
   top:0;
   left:0;
}

#region-map img{
   width: 100%;
   height: 100%;
}

.sprite_region {
   background: url(../Immagini/sprite_map.gif) no-repeat;
   width: 460px;
   height: 531px;
   z-index: 110;
}

.sprite_region_all{background:none; z-index:110;}
.sprite_region_1 {background-position:-8280px 0px;}
.sprite_region_2 {background-position:-5060px  0px;}
.sprite_region_3 {background-position:-3220px  0px;}
.sprite_region_4 {background-position:-3680px 0px;}
.sprite_region_5 {background-position:-7360px 0px;}
.sprite_region_6 {background-position:-8740px 0px;}
.sprite_region_7 {background-position:-2300px 0px;}
.sprite_region_8 {background-position:-1840px 0px;}
.sprite_region_9 {background-position:-6900px 0px;}
.sprite_region_10{background-position:-7820px 0px;}
.sprite_region_11{background-position:-2760px 0px;}
.sprite_region_12{background-position:-4140px 0px;}
.sprite_region_13{background-position:0px 0px;}
.sprite_region_14{background-position:-4600px 0px;}
.sprite_region_15{background-position:-1380px 0px;}
.sprite_region_16{background-position:-5520px 0px;}
.sprite_region_17{background-position:-460px 0px;}
.sprite_region_18{background-position:-920px 0px;}
.sprite_region_19{background-position:-5980px 0px;}
.sprite_region_20{background-position:-6440px 0px;}

Then this is the javascript:

$(function () {
     var $ = jQuery;
     var map = $("#italy-map");
     var region_map = $("#region-map");

     $("area[data-id]").mouseover(function () {
        var r = $(this);
        var id = r.attr("data-id");
        region_map.removeClass();
        region_map.addClass("sprite_region sprite_region_" + id);
     });

     $("area[data-id]").mouseout(function () {
        region_map.removeClass();
     });

     $("area[data-id]").click(function () {
        var r = $(this);
        var id = r.attr("data-id");
        var title = r.attr("title");
        inviaRegione(title);
     });
});

This code works good on IE and Firefox, but it doesn't work on Chrome. On chrome the javascript functions are not triggered. I thought that the problem was the z-index of the html elements but i tried some other values and combinations without any results.

Where is the problem?

Answer 1

Try changing id attribute to name in the map tag. Chrome seems to dislike it when map has its name in an id attribute. Your map opening tag should become this:

<map name="ItalyMap">