標籤：style http color ar cti div html htm
測試環境：xp ,ie7~8 chrome。
link 偽類 ：(：link,：visited) 這個是連結專用
動態偽類 ：(：hover,:active,:focus)
<!DOCTYPE html><html><head></head><style type="text/css">a:link,input:hover{color:blue;}a:visited{color:green;}a:active{color:red;}a:hover{color:yellow;}tr:hover,p:hover{background-color:red;}input:focus,p:focus{background-color:yellow;}</style><body><input type="text" /><a href="http://www.baidu.com">百度</a><a href="http://www.google.com">google</a><div>test</div><table><tr><td>test</td></tr></table><p>zhe ye shi test</p><input type="checkbox">nan</body></html>
對於連結（a標記）不管是link偽類還是動態偽類，在ie7-8,chrome 都有效果
對於表單元素，ie7 下不支援動態偽類，
ie8下文字框，單選框都支援：focus，
chrome下文字框支援：focus，複選框不支援focus
對於p，tr ，ie7-8,chrome 都只支援：hover。
只是簡單測試，歡迎指正
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