定义HR的一些根本样式

1、两头渐变透明：
<HR style="FILTER: alpha(opacity=100,finishopacity=0,style=3)" width="80%" color=#987cb9 SIZE=3>

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2、纺锤形：
<HR style="FILTER: alpha(opacity=100,finishopacity=0,style=2)" width="80%" color=#987cb9 SIZE=10>

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3、右边渐变透明：
<HR style="FILTER: alpha(opacity=100,finishopacity=0,style=1)" width="80%" color=#987cb9 SIZE=3>

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4、左边渐变透明：
<HR style="FILTER: alpha(opacity=0,finishopacity=100,style=1)" width="80%" color=#987cb9 SIZE=3>

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5、立体效果：
<HR style="FILTER: progid:DXImageTransform.Microsoft.Shadow(color:#987cb9,direction:145,strength:15)" width="80%" color=#987cb9 SIZE=1>

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6、钢针效果：
<HR style="FILTER: progid:DXImageTransform.Microsoft.Glow(color=#987cb9,strength=10)" width="80%" color=#987cb9 SIZE=1>

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