Various practical skills in css

Others List of tips and experiences (*The default operating environment of the following examples is Standard mode):

1. How to make Layer displayed on flash?

   Method:

   <param>
   
   设置flash的wmode值为transparent或opaque

2. How to insert flash on the page using standard methods?

   Method:

   <object>
    <param>
    <param>
    ![](*.jpg)
   </object>
   
   至于flash的宽高可以在css里设置

3. How to select the checkbox or radio button when clicking text?

   Method 1:

   <input><label>选项一</label>
   <input><label>选项二</label>
   
   <input><label>选项一</label>
   <input><label>选项二</label>
   
   该方式所有主流浏览器都支持

   Method 2:

   <label><input>选项一</label>
   <label><input>选项二</label>
   
   <label><input>选项一</label>
   <label><input>选项二</label>
   
   该方式相比方法1更简洁，但IE6及更早浏览器不支持

4. How to switch between Standard Mode and Quirks Mode in IE?

   Triggering of IE6 (add XML declaration before DTD declaration):

   <?xml  version="1.0" encoding="utf-8"?>
   nbsp;html>
   
   IE5.5及更早浏览器版本直接以Quirks Mode解析。

   Triggering of all IE versions (in DTD Add HTML comment before the declaration):

   <!-- Let IE into quirks mode -->
   nbsp;html>
   
   当没有DTD声明时，所有IE版本也会进入Quirks Mode。

5. How to distinguish display:none from visibility: hidden?

   Method:

   相同的是display:none与visibility:hidden都可以用来隐藏某个元素；
   不同的是display:none在隐藏元素的时候，将其占位空间也去掉；
   而visibility:hidden只是隐藏了内容而已，其占位空间仍然保留。

6. How to set the iframe background to be transparent under IE?

   Method:

   设置iframe元素的标签属性allowtransparency="allowtransparency"
   然后设置iframe内部页面的body背景色为transparent。
   不过由此会引发IE下一些其它问题，
   如：设置透明后的iframe将不能遮住select

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