Image Map funktioniert nicht in Firefox

<div id="jumping">
<center><img src="images/jumping.gif" alt="jump" width="1000" height="500" hspace="0" vspace="0" border="0" usemap="#jump" style="z-index:3; left: 0px; top: 0px;" />
  <map name="jump" id="jump">
    <area shape="poly" coords="64,281,77,288,97,284,105,273,90,261,140,238,158,223,164,200,146,190,96,179,99,161,112,175,132,169,167,147,173,131,165,109,143,108,129,120,129,97,135,59,123,40,102,28,82,37,67,59,40,85,17,102,3,123,3,143,14,144,9,155,11,181,18,205,3,250,3,278,20,288,41,288,35,275,34,259,38,246,47,228,84,225,90,225,64,246,50,258,50,270" href="sites/t.html" alt="T" />
    <area shape="poly" coords="237,353,294,317,343,367,356,369,367,358,368,343,362,312,355,293,355,270,349,255,338,214,349,217,356,208,346,190,334,181,332,169,320,162,306,156,290,150,280,144,270,137,256,141,241,155,232,170,224,188,224,203,215,207,212,224,216,240,211,254,205,269,203,286,212,290,214,300,212,323,213,342" href="sites/n.html" alt="N" />
    <area shape="poly" coords="605,401,610,412,627,417,640,412,631,387,639,380,637,372,642,329,667,329,653,346,648,365,653,377,654,395,673,399,685,395,682,383,678,372,687,362,698,345,708,332,728,304,727,288,716,278,688,278,705,250,721,252,745,262,771,265,801,271,811,264,808,253,788,253,767,247,739,234,735,218,731,203,724,189,719,173,701,160,666,152,649,160,631,170,613,181,603,191,601,207,598,221,575,234,562,246,532,258,513,267,513,284,526,293,544,292,550,282,571,274,595,265,608,253,595,278,590,303,599,316,599,340,596,376" href="sites/d.html" alt="D" />
    <area shape="poly" coords="387,138,399,146,409,140,412,126,423,141,444,144,468,144,493,134,499,115,512,131,521,143,543,138,559,126,567,112,567,93,565,87,550,94,534,100,527,94,523,84,515,69,500,72,482,84,480,73,494,64,547,47,562,40,574,29,577,9,558,3,550,17,546,25,537,23,515,38,491,43,490,32,488,17,479,8,458,5,432,3,414,6,414,25,426,44,411,50,396,50,380,41,359,40,356,58,367,73,384,76,380,85,371,96,374,112" href="sites/l.html" alt="L" />
    <area shape="poly" coords="817,275,834,275,837,261,838,246,843,232,838,222,811,187,837,196,858,200,882,196,899,187,908,172,921,220,924,234,921,252,937,255,959,261,980,264,984,250,976,240,956,228,953,215,952,199,949,178,941,153,955,161,967,173,985,179,993,178,993,156,977,147,953,134,935,119,924,106,909,87,893,70,902,53,877,23,849,22,826,26,794,32,785,43,790,62,796,81,808,94,814,109,815,122,811,137,799,149,776,149,761,159,762,178,773,191,785,209,800,225,811,240" href="sites/f.html" alt="F" />
  </map>
  </center>


</div>