var msg = "Oh my!  A scroll with many options that even re-sizes itself to fit your message!" 
var x = "" 
num = 1 
toggle = 1 
tt = 1 
OOK = 0 
timval = 60 
var tval = "" 
function switcha() { 
   if (document.myform.dowhat.value == "Start/Stop" ) 
     tval = "Forward/Backward" 
   if (document.myform.dowhat.value == "Forward/Backward") 
     tval = "Fast/Slow" 
   if (document.myform.dowhat.value == "Fast/Slow") 
     tval = "Start/Stop" 
   document.myform.dowhat.value = tval 
} 
function switcha2() { 
   if (document.myform.dowhat.value == "Start/Stop" ) toggla() 
   if (document.myform.dowhat.value == "Forward/Backward" ) csd() 
   if (document.myform.dowhat.value == "Fast/Slow" ) fasl() 
} 
function fasl() { timval = (timval==60 ? 150 : 60 ) } 

function csd() { 
   tt = ( tt==1 ? 0 : 1) 
} 
function scroll() { 
  if (tt==1) 
    if (num <= msg.length) 
      OOK = 1 
  if (tt==0) 
    if (num >= 0) 
      OOK = 1 

  if ( OOK == 1) 
 { 
 OOK = 0 
 x = msg.substring(0,num) 
 document.myform.scroll.value = x 
 num = ( tt==1 ? num+1 : num-1 ) 
 } 
  else 
 { 
 x = "" 
 document.myform.scroll.value = "" 
 num = (tt==1 ? 0 : msg.length ) 
 } 
  if (toggle == 1) 
 setTimeout("scroll()", timval) 
} 
function toggla() { 
 toggle = (toggle == 1 ? 0 : 1 ) 
 if (toggle == 1) scroll() 
} 

</SCRIPT> 

<FORM NAME="myform"> 
<INPUT TYPE="text" NAME="scroll" SIZE=&{msg.length + 2}; > 
<BR><BR> 
<INPUT TYPE="button"  VALUE="Do It" onClick="switcha2()"> 
<INPUT TYPE="text" NAME="dowhat" SIZE = 10 VALUE = "Start/Stop"> 
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 
<INPUT TYPE="button" VALUE="next" onClick="switcha()" > 
</FORM>