open flash chart 在IE中给servlet传参数时？？获取的参数为null

但是  在ff下 或取的参数切是正常，不知道怎么处理，哪位高人指点下？！！
<object classid="clsid:d27cdb6e-ae6d-11cf-96b8-444553540000"
codebase="http://fpdownload.macromedia.com/pub/shockwave/cabs/flash/swflash.cab#version=8,0,0,0"
width="<%=width%>" height="<%=height%>" id="ie_chart"
align="middle">
<param name="allowScriptAccess" value="sameDomain" />
<param name="movie" value="<%=url%>/open-flash-chart.swf?width=<%=width%>&height=<%=height%>&data=<%=url%>/RiverLevelChartRenderServlet" />
<param name="quality" value="high" />
<param name="bgcolor" value="#FFFFFF" />
<embed src="<%=url%>/open-flash-chart.swf?data=<%=url%>/RiverLevelChartRenderServlet?site=<%=site%>" quality="high"
bgcolor="#FFFFFF" width="<%=width%>" height="<%=height%>"
name="chart" align="middle" allowScriptAccess="sameDomain"
type="application/x-shockwave-flash"
pluginspage="http://www.macromedia.com/go/getflashplayer"
id="chart" />
</object>
标上红色的是 给servlet 传参数  不知道是哪写错了