parameters in script

hi to all good day.
how can i pass a parameter in a function?
what i want is i just want to pass a parameter in a function and call the function on my onkeypress of textbox.
i have this code and it seems won't work.
pls. help im very new in this thing..

PHP Code:

---

<form>
    <input type="textbox" name="textbox1" id="txttel" onkeypress="keydown(event,'txtname')">
    <input type="textbox" id="txtname" onkeypress="keydown(event,'txtadd')">
    <p>
    <input type="textbox" id="txtadd" onkeypress="keydown(event,'txthome')">
    <p>
    <input type="textbox" id="txthome" >
    </form>
<script>
    document.getElementById("txttel").focus();
</script>
<script>
    function keydown(e,var s){
    if (!e) var e = window.event;
    if (e.keyCode) code = e.keyCode;
    else if (e.which) code = e.which;
    if (code==13){
    document.getElementById("s").focus();
    }
    }
</script> 


---

thanks in advance guys..more power.

try this mate

PHP Code:

---

<form action="">
<table>
    <tr>
        <td>ID</td>
        <td>
            <input type="text" name="txtid" id="txtid" onkeypress="keydown(event,'txtname');">
        </td>
    </tr>
    <tr>
        <td>Name</td>
        <td>
            <input type="text" name="txtname" id="txtname" onkeypress="keydown(event,'txtaddress');">
        </td>
    </tr>
    <tr>
        <td>Address</td>
        <td>
            <input type="text" name="txtaddress" id="txtaddress">
        </td>
    </tr>
</table>
</form>
<script>
document.getElementById('txtid').focus();
function keydown(e,id){
    if(!e)var e=window.event;
    if(e.keyCode) code=e.keyCode;
        else if(e.which) code=e.which;
    if(code==13){
        document.getElementById(id).focus();
    }
}
</script> 


---

thanks...Brown Monk.


i missed w/ "".

more power..:wave: