如何修改的激活区大小？

[zhudi007]

我可以控制<img>的放大缩小，如何同时也控制<img>的激活区的大小呢？如：
<img src="image/aa.gif" border="0" usemap="#Map">
<map name="Map">
<area shape="poly" coords="81,33,90,50,75,57,67,33" href="#">
</map>
中"coords"的值呢？

[wsj]

当然可以，有DOM一切Dynamic变为可能

function toCirc()
{
document.all.Map1.areas(0).shape="circ";
document.all.Map1.areas(0).coords="50,50,20";
}
</script>
<input type="button" onclick="toCirc()" value="Change map area">
<img src="InterDev.jpg" border="0" usemap="#Map1">
<map name="Map1">
<area id=area1 shape="poly" style="border:thin inset" coords="81,33,90,50,75,57,67,33" href="#">
</map>

[Reker熊]

对应属性为
map1.areas(0).coords //0可以改成相应的area的index

[zhudi007]

谢了，你可帮我大忙了！给分！

[zhudi007]

如何在下面的情况中，按“+”号时，同时把激活区相应的增大呢？
<SCRIPT LANGUAGE="JavaScript">
var w=100,h=100
</script>

<img src="csdn.gif" style="width:expression(w);height:expression(h)">
<map name="Map1">
<area id=area1 shape="poly" style="border:thin inset" coords="81,33,90,50,75,57,67,33" href="#">
</map>


<input type=button onclick="w+=10;h+=10" value=+>
<input type=button onclick="w-=10;h-=10" value=->

[wsj]

<SCRIPT LANGUAGE="JavaScript">
var ystep=10;
var xstep=10;
function parseCoords()
{
document.all.img1.style.posWidth +=xstep;
document.all.img1.style.posHeight +=ystep;
var Rect = [document.all.img1.style.posWidth,document.all.img1.style.posHeight];
var point=document.all.Map1.areas(0).coords.split(",");
var pX = ((xstep+parseInt(Rect[0]))/parseInt(Rect[0]));
var pY = ((ystep+parseInt(Rect[1]))/parseInt(Rect[1]));
for (var i=0;i<point.length;i++)
point[i]=parseInt((i%2==0)?parseInt(point[i])*pX:parseInt(point[i])*pY);
document.all.Map1.areas(0).coords=point.toString();

}
</script>

<img id=img1 src="csdn.gif" style="width:100;height:100" usemap="#Map1">
<map name="Map1" id="Map1">
<area id=area1 shape="poly" style="border:thin inset" coords="81,33,90,50,75,57,67,33" href="#">
</map>


<input type=button onclick="parseCoords()" value=+>
<input type=button onclick="parseCoords()" value=->

[zhudi007]

为什么我给不了分啊？为什么还是未审核？