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Document.layers has no properties error

Posted on 2004-09-27
2
Medium Priority
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Last Modified: 2012-08-13
I have the following code that works OK in IE, but I have just tried it in Firefox and I get the following error:
"Document.layers has no properties"
and the line is:
document.layers[i].visibility="hide";

I do not understand Javascript.  Could anyone explain if and how I can get the Javascript to run?


function closeAllMenusExcept(MenuID)
{
var NoOfMenus=10
      for (i=0; i<NoOfMenus; i++ )
      {
        if (navigator.appName=="Netscape"){
        if (i != MenuID){
          document.layers[i].visibility="hide";
        }else{
          document.layers[i].visibility="show";
        }         
      }else{
          var what="menu" + i
        if (i != MenuID){
//              alert(document.all.item(what).innerHTML)
          document.all.item(what).style.visibility="hidden";
        }else{
          document.all.item(what).style.visibility="visible";
        }
        }
      }
}
0
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Question by:perrybond
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2 Comments
 
LVL 33

Expert Comment

by:knightEknight
ID: 12159459
change this:

   if (navigator.appName=="Netscape")

to this:

   if (document.layers)
0
 
LVL 33

Accepted Solution

by:
knightEknight earned 375 total points
ID: 12159475
function closeAllMenusExcept(MenuID)
{
var NoOfMenus=10
     for (i=0; i<NoOfMenus; i++ )
     {
       if  ( document.layers ){
        if (i != MenuID){
          document.layers[i].visibility="hide";
        }else{
          document.layers[i].visibility="show";
        }        
      }else if ( document.all ){
         var what="menu" + i
        if (i != MenuID){
//            alert(document.all.item(what).innerHTML)
          document.all.item(what).style.visibility="hidden";
        }else{
          document.all.item(what).style.visibility="visible";
        }
       }
     }else {
         var what="menu" + i
        if (i != MenuID){
//            alert(document.all.item(what).innerHTML)
          document.getElementById(what).style.visibility="hidden";
        }else{
          document.getElementById(what).style.visibility="visible";
        }
       }
     }
}
0

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