一个比较实用的导航菜单

1. <style type="text/css">
   
2. <!--
   
3. .titleStyle{
   
4. background-color:#FFCC99;color:#006699;border-top:1px solid #FFFFFF;font-size:9pt;cursor:hand;
   
5. }
   
6. .contentStyle{
   
7. background-color:#eeffee;color:blue;font-size:9pt;
   
8. }
   
9. -->
   
10. </style>
    
11. 
    
12. 
    
13. <script language="JavaScript">
    
14. <!--
    
15. var layerTop=267; //菜单顶边距
    
16. var layerLeft=840; //菜单左边距
    
17. var layerWidth=150; //菜单总宽
    
18. var titleHeight=30; //标题栏高度
    
19. var contentHeight=300; //内容区高度
    
20. var stepNo=10; //移动步数，数值越大移动越慢
    
21. 
    
22. var itemNo=0;runtimes=0;
    
23. document.write('<span id=itemsLayer style="position:absolute;overflow:hidden;border:1px solid #008800;left:'+layerLeft+';top:'+layerTop+';width:'+layerWidth+';">');
    
24. 
    
25. function addItem(itemTitle,itemContent){
    
26. itemHTML='<div id=item'+itemNo+' itemIndex='+itemNo+' style="position:relative;left:0;top:'+(-contentHeight*itemNo)+';width:'+layerWidth+';"><table width=100% cellspacing="0" cellpadding="0">'+
    
27. '<tr><td height='+titleHeight+' onclick=changeItem('+itemNo+') class="titleStyle" align=center>'+itemTitle+'</td></tr>'+
    
28. '<tr><td height='+contentHeight+' class="contentStyle">'+itemContent+'</td></tr></table></div>';
    
29. document.write(itemHTML);
    
30. itemNo++;
    
31. }
    
32. //添加菜单标题和内容，可任意多项，注意格式：
    
33. addItem('贝买网','
    
34. 　　欢迎光临贝买网！');
    
35. addItem('测试','<center><a href="#">测试</a>
    
36. 
    
37. <a href=".#">测试</a>
    
38. 
    
39. <a href="#">返回首页</a></center>');
    
40. addItem('测试','<center><a href=".#">测试</a>
    
41. 
    
42. <a href=".#">测试</a>
    
43. 
    
44. <a href=".#">测试</a>
    
45. 
    
46. <a href=".#">测试</a>
    
47. 
    
48. <a href="#">返回首页</a></center>');
    
49. 
    
50. 
    
51. document.write('</span>')
    
52. document.all.itemsLayer.style.height=itemNo*titleHeight+contentHeight;
    
53. 
    
54. toItemIndex=itemNo-1;onItemIndex=itemNo-1;
    
55. 
    
56. function changeItem(clickItemIndex){
    
57. toItemIndex=clickItemIndex;
    
58. if(toItemIndex-onItemIndex>0) moveUp(); else moveDown();
    
59. runtimes++;
    
60. if(runtimes>=stepNo){
    
61. onItemIndex=toItemIndex;
    
62. runtimes=0;}
    
63. else
    
64. setTimeout("changeItem(toItemIndex)",10);
    
65. }
    
66. 
    
67. function moveUp(){
    
68. for(i=onItemIndex+1;i<=toItemIndex;i++)
    
69. eval('document.all.item'+i+'.style.top=parseInt(document.all.item'+i+'.style.top)-contentHeight/stepNo;');
    
70. }
    
71. 
    
72. function moveDown(){
    
73. for(i=onItemIndex;i>toItemIndex;i--)
    
74. eval('document.all.item'+i+'.style.top=parseInt(document.all.item'+i+'.style.top)+contentHeight/stepNo;');
    
75. }
    
76. changeItem(0);
    
77. //-->
    
78. </script>

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