HTML – 我可以在这个复杂的不规则形状的链接上使用CSS悬停

我试图使用矩形的每个版本来包含我的图像来链接它们,但有些非常小并且重叠.有没有办法将多边形坐标合并到CSS中？我认为我的主要问题是css代码在悬停时发出请求链接大小的宽度和hgt px.但我的HTML链接是不规则形状的x和y聚合物

这是我试图悬停的CSS之一,但不知道如果不是x和y坐标,放在宽度/高度区域的内容是什么？

/* wiki image glow */
.wikiimageglow 
{ 
    margin-bottom: 10px; 
    width: px; 
    height:px; 
    display:block; 
    background:transparent url('http://cdn.obsidianportal.com/assets/199195/weird4.jpg') center top no-repeat; 
 }

.wikiimageglow:hover 
{ 
    background-image: url('http://cdn.obsidianportal.com/assets/199539/character.jpg');     
}

这是链接

<img src="http://cdn.obsidianportal.com/assets/199195/weird4.jpg" width="654" height="690" border="0" usemap="#Map" />
<map name="Map" id="Map">
    <area shape="poly" coords="351,81,386,317,335,295,302,215" href="http://www.obsidianportal.com/campaign/runelords-of-lord-ao/wikis/game-master-information" />
    <area shape="poly" coords="567,202,405,376,390,321,435,243" href="http://www.obsidianportal.com/campaigns/runelords-of-lord-ao/items" />
    <area shape="poly" coords="368,426,403,379,491,365,608,445" href="http://www.obsidianportal.com/campaigns/runelords-of-lord-ao/characters" />
    <area shape="poly" coords="308,430,364,427,489,443,628" href="http://www.obsidianportal.com/campaign/runelords-of-lord-ao/wikis/critical-hits-and-misses" />
    <area shape="poly" coords="268,383,305,428,296,514,195,616" href="http://www.obsidianportal.com/campaign/runelords-of-lord-ao/wikis/character-creation" />
    <area shape="poly" coords="279,323,270,378,198,431,53,412" href="http://www.obsidianportal.com/campaign/runelords-of-lord-ao/adventure-log" />
    <area shape="poly" coords="126,173,332,281,197,298" href="http://www.obsidianportal.com/campaign/runelords-of-lord-ao/wikis/geography" />
    <area shape="poly" coords="145,530,151,485,199,457,179,507" href="http://www.obsidianportal.com/campaign/runelords-of-lord-ao/wikis/pride" />
    <area shape="poly" coords="109,352,99,318,107,288,139,159,335" href="http://www.obsidianportal.com/campaign/runelords-of-lord-ao/wikis/wrath" />
    <area shape="poly" coords="220,144,232,286,143,292,164,254,189,228,185" href="http://www.obsidianportal.com/campaign/runelords-of-lord-ao/wikis/gluttony" />
    <area shape="poly" coords="432,142,463,480,152,461,174,415,211,414,174" href="http://www.obsidianportal.com/campaign/runelords-of-lord-ao/wikis/greed" />
    <area shape="poly" coords="524,287,551,564,358,535,355" href="http://www.obsidianportal.com/campaign/runelords-of-lord-ao/wikis/sloth" />
    <area shape="poly" coords="520,469,501,506,459,524,499,498,472" href="http://www.obsidianportal.com/campaign/runelords-of-lord-ao/wikis/envy" />
    <area shape="poly" coords="323,522,343,562,337,594,328,606,307,578" href="http://www.obsidianportal.com/campaign/runelords-of-lord-ao/wikis/lust" />
</map>