ASP.net项目开发案例全程实录关于第四章图书馆管理系统导航菜单栏的一些问题
发表在ASP.NET图书答疑 2013-04-22
是否精华
版块置顶:
在学校自己做的小项目中,运用了该管理系统导航菜单功能,研究里面的JavaScript脚本之后不知道它是怎么实现的,自己新添加了几个新的菜单项后,不显示下拉菜单,其余在原基础上改的菜单项能显示下拉菜单。还有一个最大的问题就是每个导航的菜单项的下拉列表不是在该菜单项的正下方显示,而是都聚集在第一个菜单项正下方显示,即在那个“首页”那个菜单项正下方显示,这是为什么呢?急求解答!!!
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lyh
学分:0 LV1
TA的每日心情
开心
2020-09-24 14:28:31
2013-04-26
沙发
问题是在可视化操作中导航那一块不显示东西出来,是空的,只能在代码里按照规则来改写,是不是因为版本问题成的原因,我用的是vs2005
<%@ Control Language="C#" AutoEventWireup="true" CodeFile="header.ascx.cs" Inherits="header" %>
<table border="0" cellpadding="0" cellspacing="0" style="width: 815px; height: 149px">
    <tr>
        <td colspan="2" style="height: 109px">
            <asp:Image ID="Image1" runat="server" ImageUrl="~/Images/top_bg.jpg" Width="815px" /></td>
    </tr>
    <tr>
        <td align="center" style="width: 250px; background-color: #b5b755;">
            成人教育管理系统欢迎您!</td>
        <td align="center" style="width: 381px">

            <script language="jscript.encode" type="text/javascript">
var mmenus    = new Array();
var misShow   = new Boolean(); 
misShow=false;
var misdown   = new Boolean();
misdown=false;
var musestatus=false;
var mpopTimer = 0;
mmenucolor='#99C89D';mfontcolor='MenuText';mmenuoutcolor='#59D1FF';mmenuincolor='#59D1FF';
mmenuoutbordercolor='#FFFFFF';mmenuinbordercolor='#000000';mmidoutcolor='#E2DFDA';mmidincolor='#8D8A85';
mmenuovercolor='MenuText';mitemedge='1';msubedge='1';mmenuunitwidth=50;mmenuitemwidth=100;mmenuheight=22;mmenuwidth='500';
mmenuadjust=0;mmenuadjustV=0;mfonts='font-family: 宋体; font-size: 9pt; color: MenuText; ';mcursor='default';
var fadeSteps = 15;
var fademsec = 100;//修改显示速度
var fadeArray = new Array();
function fade(el, fadeIn, steps, msec) {
if (steps == null) steps = fadeSteps;
if (msec == null) msec = fademsec;
if (el.fadeIndex == null)
el.fadeIndex = fadeArray.length;
fadeArray[el.fadeIndex] = el;
if (el.fadeStepNumber == null) {
if (el.style.visibility == "hidden")
el.fadeStepNumber = 0;
else
el.fadeStepNumber = steps;
if (fadeIn)
el.style.filter = "Alpha(Opacity=0)";
else
el.style.filter = "Alpha(Opacity=100)";
}
window.setTimeout("repeatFade(" + fadeIn + "," + el.fadeIndex + "," + steps + "," + msec + ")", msec);
}
function repeatFade(fadeIn, index, steps, msec) {
el = fadeArray[index];

c = el.fadeStepNumber;
if (el.fadeTimer != null)
window.clearTimeout(el.fadeTimer);
if ((c == 0) && (!fadeIn)) {
el.style.visibility = "hidden";
return;
}
else if ((c==steps) && (fadeIn)) {
el.style.filter = "";
el.style.visibility = "visible";
return;
}
else {
(fadeIn) ?  c++ : c--;
el.style.visibility = "visible";
el.style.filter = "Alpha(Opacity=" + 100*c/steps + ")";
el.fadeStepNumber = c;
el.fadeTimer = window.setTimeout("repeatFade(" + fadeIn + "," + index + "," + steps + "," + msec + ")", msec);
}
}

function stoperror(){
return true;
}
window.onerror=stoperror;
function mpopOut() {
mpopTimer = setTimeout('mallhide()', 500);
}
function getReal(el, type, value) {
temp = el;
while ((temp != null) && (temp.tagName != "BODY")) {
if (eval("temp." + type) == value) {
el = temp;
return el;
}
temp = temp.parentElement;
}
return el;
}


function mMenuRegister(menu) 
{
  mmenus[mmenus.length] = menu
  return (mmenus.length - 1)
}
function mMenuItem(caption,command,target,isline,statustxt,img,sizex,sizey,pos){
this.caption=caption;
this.command=command;
this.target=target;
this.isline=isline;
this.statustxt=statustxt;
this.img=img;
this.sizex=sizex;
this.sizey=sizey;
this.pos=pos;
}
function mMenu(caption,command,target,img,sizex,sizey,pos){
this.items = new Array();
this.caption=caption;
this.command=command;
this.target=target;
this.img=img;
this.sizex=sizex;
this.sizey=sizey;
this.pos=pos;
this.id=mMenuRegister(this);
}
function mMenuAddItem(item)
{
  this.items[this.items.length] = item
  item.parent = this.id;
  this.children=true;
}

mMenu.prototype.addItem = mMenuAddItem;
function mtoout(src){

src.style.borderLeftColor=mmenuoutbordercolor;
src.style.borderRightColor=mmenuinbordercolor;
src.style.borderTopColor=mmenuoutbordercolor;
src.style.borderBottomColor=mmenuinbordercolor;
src.style.backgroundColor=mmenuoutcolor;
src.style.color=mmenuovercolor;
}
function mtoin(src){

src.style.borderLeftColor=mmenuinbordercolor;
src.style.borderRightColor=mmenuoutbordercolor;
src.style.borderTopColor=mmenuinbordercolor;
src.style.borderBottomColor=mmenuoutbordercolor;
src.style.backgroundColor=mmenuincolor;
src.style.color=mmenuovercolor;
}
function mnochange(src){
src.style.borderLeftColor=mmenucolor;
src.style.borderRightColor=mmenucolor;
src.style.borderTopColor=mmenucolor;
src.style.borderBottomColor=mmenucolor;
src.style.backgroundColor='';
src.style.color=mfontcolor;

}
function mallhide(){
for(var nummenu=0;nummenu<mmenus.length;nummenu++){
var themenu=document.all['mMenu'+nummenu]
var themenudiv=document.all['mmenudiv'+nummenu]
                mnochange(themenu);
                mmenuhide(themenudiv);
                }
}
function mmenuhide(menuid){

fade(menuid,false,0);
misShow=false;
}
function mmenushow(menuid,pid){

menuid.style.left=mposflag.offsetLeft+pid.offsetLeft+mmenuadjust;menuid.style.top=mposflag.offsetTop+mmenutable.offsetHeight+mmenuadjustV;
if(mmenuitemwidth+parseInt(menuid.style.left)>document.body.clientWidth+document.body.scrollLeft)
menuid.style.left=document.body.clientWidth+document.body.scrollLeft-mmenuitemwidth;
fade(menuid,true,0);
misShow=true;
}
function mmenu_over(menuid,x){
toel = getReal(window.event.toElement, "className", "coolButton");
fromel = getReal(window.event.fromElement, "className", "coolButton");
if (toel == fromel) return;
if(x==0||x==7||x==6){
  misShow = false;
  mallhide();
  mtoout(eval("mMenu"+x));
}else{

  mallhide();
  mtoin(eval("mMenu"+x));
  mmenushow(menuid,eval("mMenu"+x));

}
clearTimeout(mpopTimer);
}
function mmenu_out(x){
toel = getReal(window.event.toElement, "className", "coolButton");
fromel = getReal(window.event.fromElement, "className", "coolButton");
if (toel == fromel) return;
if (misShow){
mtoin(eval("mMenu"+x));
}else{
mnochange(eval("mMenu"+x));
}
mpopOut()
}
function mmenu_down(menuid,x){
  if(misShow){
  mmenuhide(menuid);
  mtoout(eval("mMenu"+x));
  }
  else{
  mtoin(eval("mMenu"+x));
  mmenushow(menuid,eval("mMenu"+x));
  misdown=true;
  }
}
function mmenu_up(){
  misdown=false;
}
function mmenuitem_over(x,i){
srcel = getReal(window.event.srcElement, "className", "coolButton");
if(misdown){
mtoin(srcel);
}
else{
mtoout(srcel);
}
mthestatus = mmenus[x].items[i].statustxt;
if(mthestatus!=""){
musestatus=true;
window.status=mthestatus;
}
clearTimeout(mpopTimer);
}
function mmenuitem_out(){
srcel = getReal(window.event.srcElement, "className", "coolButton");
mnochange(srcel);
if(musestatus)window.status="";
mpopOut()
}
function mmenuitem_down(){
srcel = getReal(window.event.srcElement, "className", "coolButton");
mtoin(srcel)
misdown=true;
}
function mmenuitem_up(){
srcel = getReal(window.event.srcElement, "className", "coolButton");
mtoout(srcel)
misdown=false;
}
function mexec2(x){
var cmd;
if(mmenus[x].target=="blank"){
  cmd = "window.open('"+mmenus[x].command+"')";
}else{
  cmd = mmenus[x].target+".location=\""+mmenus[x].command+"\"";
}
eval(cmd);
}
function mexec(x,i){
var cmd;
if(mmenus[x].items[i].target=="blank"){
  cmd = "window.open('"+mmenus[x].items[i].command+"')";
}else{
  cmd = mmenus[x].items[i].target+".location=\""+mmenus[x].items[i].command+"\"";
}
eval(cmd);
}
function mbody_click(){

if (misShow){
srcel = getReal(window.event.srcElement, "className", "coolButton");
for(var x=0;x<=mmenus.length;x++){
if(srcel.id=="mMenu"+x)
return;
}
mallhide();
}
}
document.onclick=mbody_click;
function mwritetodocument(){
      var mwb=1;
                     var stringx='<div id="mposflag" style="position:absolute;"></div><table  id=mmenutable border=0 cellpadding=3 cellspacing=2 width='+mmenuwidth+' height='+mmenuheight+' bgcolor='+mmenucolor+
                     ' onselectstart="event.returnValue=false"'+
                     ' style="cursor:'+mcursor+';'+mfonts+
                     ' border-left: '+mwb+'px solid '+mmenuoutbordercolor+';'+
                     ' border-right: '+mwb+'px solid '+mmenuinbordercolor+'; '+
                     'border-top: '+mwb+'px solid '+mmenuoutbordercolor+'; '+
                     'border-bottom: '+mwb+'px solid '+mmenuinbordercolor+'; padding:0px"><tr>'
                     for(var x=0;x<mmenus.length;x++){
                      var thismenu=mmenus[x];
                      var imgsize="";
                      if(thismenu.sizex!="0"||thismenu.sizey!="0")imgsize=" width="+thismenu.sizex+" height="+thismenu.sizey;
                      var ifspace="";
                      if(thismenu.caption!="")ifspace=" ";
                      stringx += "<td nowrap class=coolButton id=mMenu"+x+" style='border: "+mitemedge+"px solid "+mmenucolor+
                      "' width="+mmenuunitwidth+"px onmouseover=mmenu_over(mmenudiv"+x+
                      ","+x+") onmouseout=mmenu_out("+x+
                      ") onmousedown=mmenu_down(mmenudiv"+x+","+x+")";
                            if(thismenu.command!=""){
                                stringx += " onmouseup=mmenu_up();mexec2("+x+");";
                            }else{
                               stringx += " onmouseup=mmenu_up()";
                            }
                            if(thismenu.pos=="0"){
                                stringx += " align=center><img align=absmiddle src='"+thismenu.img+"'"+imgsize+">"+ifspace+thismenu.caption+"</td>";
                            }else if(thismenu.pos=="1"){
                                stringx += " align=center>"+thismenu.caption+ifspace+"<img align=absmiddle src='"+thismenu.img+"'"+imgsize+"></td>";
                            }else if(thismenu.pos=="2"){
                                stringx += " align=center background='"+thismenu.img+"'> "+thismenu.caption+" </td>";
                            }else{
                                stringx += " align=center> "+thismenu.caption+" </td>";
                            }
                      stringx += "";
                     }
                     stringx+="<td width=*> </td></tr></table>";
                     
                     
                     for(var x=0;x<mmenus.length;x++){
                      thismenu=mmenus[x];
                        if(x==0||x==6||x==7){
                        stringx+='<div id=mmenudiv'+x+' style="visiable:none"></div>';
                        }else{
                        stringx+='<div id=mmenudiv'+x+
                        ' style="cursor:'+mcursor+';position:absolute;'+
                        'width:'+mmenuitemwidth+'px; z-index:'+(x+100);
                        if(mmenuinbordercolor!=mmenuoutbordercolor&&msubedge=="0"){
                        stringx+=';border-left: 1px solid '+mmidoutcolor+
                        ';border-top: 1px solid '+mmidoutcolor;}
                        stringx+=';border-right: 1px solid '+mmenuinbordercolor+
                        ';border-bottom: 1px solid '+mmenuinbordercolor+';visibility:hidden" onselectstart="event.returnValue=false">\n'+
                      '<table  width="100%" border="0" height="100%" align="center" cellpadding="0" cellspacing="2" '+
                      'style="'+mfonts+' border-left: 1px solid '+mmenuoutbordercolor;
                        if(mmenuinbordercolor!=mmenuoutbordercolor&&msubedge=="0"){
                      stringx+=';border-right: 1px solid '+mmidincolor+
                      ';border-bottom: 1px solid '+mmidincolor;}
                      stringx+=';border-top: 1px solid '+mmenuoutbordercolor+
                      ';padding: 4px" bgcolor='+mmenucolor+'>\n'
                      for(var i=0;i<thismenu.items.length;i++){
                      var thismenuitem=thismenu.items[i];
                      var imgsize="";
                              if(thismenuitem.sizex!="0"||thismenuitem.sizey!="0")imgsize=" width="+thismenuitem.sizex+" height="+thismenuitem.sizey;
                              var ifspace="";
                              if(thismenu.caption!="")ifspace=" ";
                      if(!thismenuitem.isline){
                      stringx += "<tr><td class=coolButton style='border: "+mitemedge+"px solid "+mmenucolor+
                      "' width=100% height=15px onmouseover=\"mmenuitem_over("+x+","+i+
                      ");\" onmouseout=mmenuitem_out() onmousedown=mmenuitem_down() onmouseup=";
  stringx += "mmenuitem_up();mexec("+x+","+i+"); ";
  if(thismenuitem.pos=="0"){
                                  stringx += "><img align=absmiddle src='"+thismenuitem.img+"'"+imgsize+">"+ifspace+thismenuitem.caption+"</td></tr>";
                                }else if(thismenuitem.pos=="1"){
                                  stringx += ">"+thismenuitem.caption+ifspace+"<img align=absmiddle src='"+thismenuitem.img+"'"+imgsize+"></td></tr>";
                                }else if(thismenuitem.pos=="2"){
                                  stringx += "background='"+thismenuitem.img+"'>"+thismenuitem.caption+"</td></tr>";
                                }else{
                                  stringx += ">"+thismenuitem.caption+"</td></tr>";
                                }
  }else{
                      stringx+='<tr><td height="1" background="hr.gif" onmousemove="clearTimeout(mpopTimer);"><img height="1" width="1" src="none.gif" border="0"></td></tr>\n';
                      }
                      }stringx+='</table>\n</div>'
                      }
                     
                }
                
                     document.write("<div align='left'>"+stringx+"</div>");
}

mpmenu1=new mMenu('首页','index.aspx','self','','','','');

mpmenu2=new mMenu('专业管理','#','self','','','','');
mpmenu2.addItem(new mMenuItem('教学计划浏览','','self',false,'','','','',''));
mpmenu2.addItem(new mMenuItem('专业代码录入','addMajor.aspx','self',false,'','','','',''));
mpmenu2.addItem(new mMenuItem('教学计划录入','','self',false,'','','','',''));
mpmenu2.addItem(new mMenuItem('教学计划修改','','self',false,'','','','',''));

mpmenu3=new mMenu('课程管理','#','self','','','','');
mpmenu3.addItem(new mMenuItem('专业课程浏览','courInfo.aspx','self',false,'','','','',''));
mpmenu3.addItem(new mMenuItem('课程信息录入','addCourInfo.aspx','self',false,'','','','',''));
mpmenu3.addItem(new mMenuItem('课程信息修改','updateCourInfo.aspx','self',false,'','','','',''));
mpmenu3.addItem(new mMenuItem('课程信息删除','deleteCourInfo.aspx','self',false,'','','','',''));
mpmenu3.addItem(new mMenuItem('学生个人选课情况的查询','','self',false,'','','','',''));

mpmenu4=new mMenu('班级管理','#','self','','','','');
mpmenu4.addItem(new mMenuItem('行政班级浏览','classInfo.aspx','self',false,'','','','',''));
mpmenu4.addItem(new mMenuItem('班级信息录入','addClassInfo.aspx','self',false,'','','','',''));
mpmenu4.addItem(new mMenuItem('班级信息修改','','self',false,'','','','',''));
mpmenu4.addItem(new mMenuItem('班级信息删除','','self',false,'','','','',''));

mpmenu5=new mMenu('学生管理','#','self','','','','');
mpmenu5.addItem(new mMenuItem('学生信息浏览','stuInfo.aspx','self',false,'','','','',''));
mpmenu5.addItem(new mMenuItem('学生信息录入','','self',false,'','','','',''));
mpmenu5.addItem(new mMenuItem('学生信息修改','','self',false,'','','','',''));
mpmenu5.addItem(new mMenuItem('学生信息删除','','self',false,'','','','',''));
mpmenu5.addItem(new mMenuItem('学籍异动情况','','self',false,'','','','',''));
mpmenu5.addItem(new mMenuItem('注册信息浏览','','self',false,'','','','',''));

mpmenu6=new mMenu('考试管理','#','self','','','','');
mpmenu6.addItem(new mMenuItem('考试信息浏览','','self',false,'','','','',''));
mpmenu6.addItem(new mMenuItem('考试信息录入','','self',false,'','','','',''));
mpmenu6.addItem(new mMenuItem('考试信息修改','','self',false,'','','','',''));
mpmenu6.addItem(new mMenuItem('考试信息删除','','self',false,'','','','',''));
mpmenu6.addItem(new mMenuItem('考试报名','','self',false,'','','','',''));
mpmenu6.addItem(new mMenuItem('考试安排','','self',false,'','','','',''));

mpmenu10=new mMenu('查询','#','self','','','','');

mpmenu11=new mMenu('帮助','help.aspx','self','','','','');

mpmenu7=new mMenu('成绩管理','#','self','','','','');
mpmenu7.addItem(new mMenuItem('学生成绩查询','','self',false,'','','','',''));
mpmenu7.addItem(new mMenuItem('学生成绩导入','','self',false,'','','','',''));
mpmenu7.addItem(new mMenuItem('学生成绩导出','','self',false,'','','','',''));

mpmenu8=new mMenu('教师管理','#','self','','','','');
mpmenu8.addItem(new mMenuItem('专业课任课老师信息','','self',false,'','','','',''));
mpmenu8.addItem(new mMenuItem('班级辅导员信息','','self',false,'','','','',''));

mpmenu9=new mMenu('用户管理','#','self','','','','');
mpmenu9.addItem(new mMenuItem('系统管理员','','self',false,'','','','',''));
mpmenu9.addItem(new mMenuItem('管理员1','','self',false,'','','','',''));
mpmenu9.addItem(new mMenuItem('管理员2','','self',false,'','','','',''));
mpmenu9.addItem(new mMenuItem('专业任课老师','','self',false,'','','','',''));
mpmenu9.addItem(new mMenuItem('班级辅导员','','self',false,'','','','',''));
mpmenu9.addItem(new mMenuItem('学生','','self',false,'','','','',''));

mwritetodocument();
            </script>

        </td>
    </tr>
</table>
lyh
学分:0 LV1
TA的每日心情
开心
2020-09-24 14:28:31
2013-04-27
板凳
前一个问题解决了,都可以显示下拉菜单了。
但是后面那个问题还是不能解决,就是每个菜单项的下拉菜单显示位置都在第一个菜单项下方位置那里,而不是我们正常情况下想要的在鼠标移到那个菜单项就自动在其正下方显示下拉菜单,不知道相关代码指的是哪些?怎么修改里面的值?
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