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<script type="text/javascript" language="javascript"> 
function show(checkbox_list){ 
var checkbox_list = document.getElementById(checkbox_list); 
checkbox_list.style.display = "block"; 
} 
function hidden(checkbox_list){ 
var checkbox_list = document.getElementById(checkbox_list); 
checkbox_list.style.display = "none"; 
} 
</script> 

<table width="100%" border="0" cellpadding="0" cellspacing="1" class="table"> 

<tr> 
<td colspan="7" style="position:relative;"> 
<input name="b2" type="button" value="订餐" class="button" onclick="show('checkbox_sizemodellist')" /> 
<!--div begin--> 
<div id="checkbox_sizemodellist" style="display:none;z-index:2000;position:absolute;left:3px;top:23px;border:1px solid #06c;padding:0px;background:#fff;"> 
<div style="background:#0184de;text-align:right;padding-right:3px;"><span style="width:12;border-width:0px;color:white;font-family:webdings; cursor:hand; left:-200;" onclick="hidden('checkbox_sizemodellist')">r</span></div> 
<asp:PlaceHolder ID="phl" runat="server"></asp:PlaceHolder> 
     <input name="" type="button" class="button" style="width:40px;" value="提交"/> <input name="" class="button" type="button" onclick="hidden('checkbox_sizemodellist')" value="关闭" style="width:40px;"/><br /> 
</div> 
<!--div end--> 
</td> 
</tr> 
</table>