<form name="form1" method="post" action="">
<input type="button" name="Submit" value="+" onclick="form1.te.value++;">
<input type="button" name="Submit2" value="-" onclick="form1.te.value--;">
<input name="te" type="text" id="te" size="10">
</form>
<input type="button" name="Submit" value="+" onclick="form1.te.value++;">
<input type="button" name="Submit2" value="-" onclick="form1.te.value--;">
<input name="te" type="text" id="te" size="10">
</form>
<input type="button" name="button1" value="+" onclick="form1.te.value++;">
<input type="button" name="button2" value="-" onclick="form1.te.value--;">
<input name="te" type="text" id="te" size="10" onclick="form1.te.value++;">
</form>
<!--
function a(o,n){
o.value=isNaN(o.value)?0:(Number(o.value)+n)
}
//-->
</script>
<form name="form1" method="post" action="">
<input type="button" name="Submit" value="+" onclick="a(te,1)">
<input type="button" name="Submit2" value="-" onclick="a(te,-1)">
<input name="te" type="text" id="te" size="10">
</form>