1. Write a navigation bar . When you click the title, you can expand and contract the content of the navigation bar, simplify the content or display more content.
The sample code is as follows:
New Document </ TITLE> <br><META NAME="Generator" CONTENT="EditPlus"> <br><META NAME="Author" CONTENT=""> <br><META NAME="Keywords" CONTENT= ""> <br><META NAME="Description" CONTENT=""> <br><script language="javascript" type="text/javascript" src="jquery-1.8.3.min. js"> <br></script> <br><style type="text/css"> <br>body{font-size:13px} <br>#divFrame{border:solid 1px #666 ;width:301px;overflow:hidden} <br>#divFrame .clsHead{background-color:#eee;padding:8px;height:18px;cursor:hand} <br>#divFrame .clsHead h3{padding:0px;margin :0px;float:left} <br>#divFrame .clsHead span{float:right;margin-top:3px} <br>#divFrame .clsContent{padding:8px} <br>#divFrame .clsContent ul{list-style -type:none;margin:0px;padding:0px} <br>#divFrame .clsContent ul li{float:left;width:95px;height:23px;line-height:23px} <br>#divFrame .clsBot{float :right;padding-top:5px;padding-bottom:5px} <br>.GetFocus{background-color:#eee} <br></style> <br><script type="text/javascript"> ; <BR>$(function(){ //Page loading event<BR>$(".clsHead").click(function(){ //Image click event<BR>if($(".clsContent"). is(":visible")){ //If the content is visible<BR>$(".clsHead span img").attr("src","Images/a1.gif"); //Change the image<BR>$ (".clsContent").css("display","none"); //Hide content<BR>}else{ <BR>$(".clsHead span img").attr("src","Images/ a2.gif"); //Change the image<BR>$(".clsContent").css("display","block");//Display content<BR>} <BR>}); <BR>$ (".clsBot > a").click(function(){ //Hot link click event<br>if($(".clsBot > a").text()=="Simplify"){ // If the content is 'simplified'<br>$("ul li:gt(4):not(:last)").hide(); //Hide elements with index number greater than 4 and not the last item<br> $(".clsBot > a").text("more"); //Change the character content to "more" <br>}else{ <br>$("ul li:gt(4): not(:last)").show().addClass("GetFocus"); //Show the selected element and add style<br>$(".clsBot > a").text("Simplify"); / /Change character content to "simplified" <br>} <br>}); <br>}); <br></script> <br></HEAD> <br><BODY> <br><div id="divFrame"> <br><div class="clsHead"> <br><h3>Book Category</h3> <br><span><img src= "Images/a2.gif" alt="book!"/></span> <br></div> <br><div class="clsContent"> <br><ul> <br><li><a href="#">Novel</a><i> ( 1110 ) </i></li> <br><li><a href ="#">Literature</a><i> ( 230 ) </i></li> <br><li><a href="#">Youth</ a><i> ( 1430 ) </i></li> <br><li><a href="#">Children</a><i> ( 1560 ) < ;/i></li> <br><li><a href="#">Life</a><i> ( 870 ) </i></li> <br><li><a href="#">Social Science</a><i> ( 1460 ) </i></li> <br><li><a href="#">Management</a><i> ( 1450 ) </i></li> <br><li><a href="#">Computer< /a><i> ( 1780 ) </i></li> <br><li><a href="#">Education</a><i> ( 930 ) </i></li> <br><li><a href="#">Reference Book</a><i> ( 3450 ) </i></li> ; <br><li><a href="#">Introduced version</a><i> ( 980 ) </i></li> ;a href="#">Other categories</a><i> ( 3230 ) </i></li> <br></ul> <br></div> <br><div class="clsBot"> <br><a href="#">Simplify</a> <br><img src="Images/a5.gif" alt="" /> <br></div> <br></div> <br></BODY> <br></HTML> <br><br><br><strong>2. Rendering </strong>: <br>
<p><img alt="" src="http://files.jb51.net/file_images/article/201301/201301071102534.jpg"><br></p>
<p>After clicking: </p>
<p><img alt="" src="http://files.jb51.net/file_images/article/201301/201301071102535.jpg"><br></p>
<p>Simplified: </p>
<p><img alt="" src="http://files.jb51.net/file_images/article/201301/201301071102536.jpg"></p>
</div> </div>
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