<script language="JavaScript">
<!--

var m = (document.all);
var n = (document.layers);
var way = 0;

function go() {
               if (way == 0) { goRight(); }
               if (way == 1) { goLeft(); }
               }

function goRight() {
                    if (m) { 
                            menu1.style.left = parseInt(menu1.style.left) + 10;
                            if (parseInt(menu1.style.left) == 50) { way=1; return false; }
                            }
                    if (n) {
                            document.menu1.left += 10;
                            if (document.menu1.left == 50) { way=1; return false; }
                            }

                   setTimeout("goRight()",10);
                   }


function goLeft() {
                   if (m) { 
                           menu1.style.left = parseInt(menu1.style.left) - 10;
                           if (parseInt(menu1.style.left) == -210) { way=0; return false; }
                           }
                   setTimeout("goLeft()",10);
                   }

//-->
</script>

The script is getting longer, but it still should make sense. The line if (n) { says "If the browser is Netscape, then do this:" document.menu1.left += 10; That line moves the object to the right 10 pixels. The next line: if (document.menu1.left == 50) { way=1; return false; } This line stops the object when it gets to 50 pixels.

I'm going to go ahead and finish the script off: (the new script is bolded)

<script language="JavaScript">
<!--

var m = (document.all);
var n = (document.layers);
var way = 0;

function go() {
               if (way == 0) { goRight(); }
               if (way == 1) { goLeft(); }
               }

function goRight() {
                    if (m) { 
                            menu1.style.left = parseInt(menu1.style.left) + 10;
                            if (parseInt(menu1.style.left) == 50) { way=1; return false; }
                            }
                    if (n) {
                            document.menu1.left += 10;
                            if (document.menu1.left == 50) { way=1; return false; }
                            }

                   setTimeout("goRight()",10);
                   }


function goLeft() {
                   if (m) { 
                           menu1.style.left = parseInt(menu1.style.left) - 10;
                           if (parseInt(menu1.style.left) == -210) { way=0; return false; }
                           }
                     if (n) {
                            document.menu1.left -= 10;
                            if (document.menu1.left == -210) { way=0; return false; }
                            }
                   setTimeout("goLeft()",10);
                   }

//-->
</script>