<script>
function mxh()
{
for(i=0;i<document.f.s.options.length;i++)
{
if(document.f.s.options[i].text==document.f.b.value) document.f.s.options[i].text=document.f.a.value
}
}
</script>
<form name=f>
<select name=s onchange="a.value=b.value=this.options[this.selectedIndex].text">
<option>a
<option>b
<option>c
</select>
<input type=button onclick="mxh()" value=test>
<input name=a>
<input name=b type=hidden>
</form>
function mxh()
{
for(i=0;i<document.f.s.options.length;i++)
{
if(document.f.s.options[i].text==document.f.b.value) document.f.s.options[i].text=document.f.a.value
}
}
</script>
<form name=f>
<select name=s onchange="a.value=b.value=this.options[this.selectedIndex].text">
<option>a
<option>b
<option>c
</select>
<input type=button onclick="mxh()" value=test>
<input name=a>
<input name=b type=hidden>
</form>
function mxh()
{
for(i=0;i<document.f.s.options.length;i++)
{
if(i==document.f.b.value) document.f.s.options[i].text=document.f.a.value
}
}
</script>
<form name=f>
<select name=s onchange="a.value=this.options[this.selectedIndex].text;b.value=this.selectedIndex">
<option>a
<option>b
<option>c
<option>a
<option>b
<option>c
</select>
<input type=button onclick="mxh()" value=test>
<input name=a>
<input name=b type=hidden>
</form>
<form name=f>
<select name=s onchange="a.value=this.options[this.selectedIndex].text;b.value=this.selectedIndex">
<option>a
<option>b
<option>c
<option>a
<option>b
<option>c
</select>
<input type=button onclick="s.options[Number(b.value)].text=a.value" value=test>
<input name=a>
<input name=b type=hidden>
</form>
<option>1
<option>2
<option>3
</select>
<input name=i1>
<input type=button value=change onclick="sel[sel.selectedIndex].text=i1.value">
<script>document.all.sel.selectedIndex=-1</script>
<option value=sel1>sel10
<option value=sel2>sel20
<option value=sel3>sel30
</select>
<input name=show>
<input type=button name=modify value=modity onclick="sel.options[sel.selectedIndex].text=show.value">