非常简洁的网页导航菜单

本文详细介绍非常简洁的网页导航菜单,用CSS和javascript制作的非常简洁的网页导航菜单，而且还具有下拉的功能啊！呵呵

<style type="text/css"> /*Credits: Dynamic Drive CSS Library */ /*URL: <a href="http://www.dynamicdrive.com/style/" target="_blank">http://www.dynamicdrive.com/style/</a> */ .suckertreemenu ul{ margin: 0; padding: 0; list-style-type: none; } /*Top level list items*/ .suckertreemenu ul li{ position: relative; display: inline; float: left; background-color: #F3F3F3; /*overall menu background color*/ } /*Top level menu link items style*/ .suckertreemenu ul li a{ display: block; width: 90px; /*Width of top level menu link items*/ padding: 1px 8px; border: 1px solid black; border-left-width: 0; text-decoration: none; color: navy; } /*1st sub level menu*/ .suckertreemenu ul li ul{ left: 0; position: absolute; top: 1em; /* no need to change, as true value set by script */ display: block; visibility: hidden; } /*Sub level menu list items (undo style from Top level List Items)*/ .suckertreemenu ul li ul li{ display: list-item; float: none; } /*All subsequent sub menu levels offset after 1st level sub menu */ .suckertreemenu ul li ul li ul{ left: 159px; /* no need to change, as true value set by script */ top: 0; } /* Sub level menu links style */ .suckertreemenu ul li ul li a{ display: block; width: 160px; /*width of sub menu levels*/ color: navy; text-decoration: none; padding: 1px 5px; border: 1px solid #ccc; } .suckertreemenu ul li a:hover{ background-color: black; color: white; } /*Background image for top level menu list links */ .suckertreemenu .mainfoldericon{ background: #F3F3F3 url(media/arrow-down.gif) no-repeat center right; } /*Background image for subsequent level menu list links */ .suckertreemenu .subfoldericon{ background: #F3F3F3 url(media/arrow-right.gif) no-repeat center right; } * html p#iepara{ /*For a paragraph (if any) that immediately follows suckertree menu, add 1em top spacing between the two in IE*/ padding-top: 1em; } /* Holly Hack for IE \*/ * html .suckertreemenu ul li { float: left; height: 1%; } * html .suckertreemenu ul li a { height: 1%; } /* End */ </style> <script type="text/javascript"> //SuckerTree Horizontal Menu (Sept 14th, 06) //By Dynamic Drive: <a href="http://www.dynamicdrive.com/style/" target="_blank">http://www.dynamicdrive.com/style/</a> var menuids=["treemenu1"] //Enter id(s) of SuckerTree UL menus, separated by commas function buildsubmenus_horizontal(){ for (var i=0; i<menuids.length; i++){ var ultags=document.getElementById(menuids[i]).getElementsByTagName("ul") for (var t=0; t<ultags.length; t++){ if (ultags[t].parentNode.parentNode.id==menuids[i]){ //if this is a first level submenu ultags[t].style.top=ultags[t].parentNode.offsetHeight+"px" //dynamically position first level submenus to be height of main menu item ultags[t].parentNode.getElementsByTagName("a")[0].className="mainfoldericon" } else{ //else if this is a sub level menu (ul) ultags[t].style.left=ultags[t-1].getElementsByTagName("a")[0].offsetWidth+"px" //position menu to the right of menu item that activated it ultags[t].parentNode.getElementsByTagName("a")[0].className="subfoldericon" } ultags[t].parentNode.onmouseover=function(){ this.getElementsByTagName("ul")[0].style.visibility="visible" } ultags[t].parentNode.onmouseout=function(){ this.getElementsByTagName("ul")[0].style.visibility="hidden" } } } } if (window.addEventListener) window.addEventListener("load", buildsubmenus_horizontal, false) else if (window.attachEvent) window.attachEvent("onload", buildsubmenus_horizontal) </script> <div class="suckertreemenu"> <ul id="treemenu1"> <li><a href="#" style="border-left: 1px solid black">Item 1</a></li> <li><a href="#">Item 2</a></li> <li><a href="#">Folder 1</a> <ul> <li><a href="#">Sub Item 1.1</a></li> <li><a href="#">Sub Item 1.2</a></li> <li><a href="#">Sub Item 1.3</a></li> <li><a href="#">Sub Item 1.4</a></li> </ul> </li> <li><a href="#">Item 3</a></li> <li><a href="#">Folder 2</a> <ul> <li><a href="#">Sub Item 2.1</a></li> <li><a href="#">Folder 2.1</a> <ul> <li><a href="#">Sub Item 2.1.1</a></li> <li><a href="#">Sub Item 2.1.2</a></li> <li><a href="#">Sub Item 2.1.3</a></li> <li><a href="#">Sub Item 2.1.4</a></li> </ul> </li> </ul> </a> </li> <li><a href="#">Item 4</a></li> </ul> <br style="clear: left;" /> </div> <p id="iepara">Rest of content here</p>

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