隐藏并且不占位
<div id="mmm">
插入FLASH动画<br>
插入FLASH动画<br>
插入FLASH动画<br>
插入FLASH动画<br>
插入FLASH动画<br>
</div>
<input type="button" name=hiddendiv value="隐藏" onClick="javascript:return document.all.mmm.style.display='none'">
<input type="button" name=showdiv value="显示"onClick="javascript:return document.all.mmm.style.display='block'">
隐藏但是DIV所占的位置保持空白
<div id="mmm" style="background:#cccccc;">
插入FLASH动画<br>
插入FLASH动画<br>
插入FLASH动画<br>
插入FLASH动画<br>
插入FLASH动画<br>
</div>
<input type="button" name=hiddendiv value="隐藏" onClick="javascript:return document.all.mmm.style.visibility='hidden'">
<input type="button" name=showdiv value="显示"onClick="javascript:return document.all.mmm.style.visibility='visible'">
复选框控制层的显隐
<input type=checkbox onclick="tt.style.display=this.checked?'':'none'"><br>
<div id=tt style="display:none;background-color:pink;width:400;height:400;"></div>
demo.html
<html>
<body>
<div id='a' style="display='none';" >
rerr3545e
</div>
<div id='b'>
<table BORDER=2 CELLPADDING=2 CELLSPACING=4>
<tr>
<td>abc</td>
<td>abc23</td>
</tr>
<tr style="display='none';">
<td>abc2</td>
<td>abc3</td>
</tr>
</table>
</div>
<div id='c'><table BORDER=2 CELLPADDING=2 CELLSPACING=4>
<tr>
<td>abc</td>
<td style="display='none';">abc2</td>
</tr>
</table></div>
</body>
</html>
