Converting array key to its numerical counterpart

[freddydoesphp]

I have a form on one of my pages and I am trying to make an auto-tab function where it checks when you get to the end of a field it automatically tabs to the next and so far so good but what I want to do is to get the array index for a given element which I supply the name for instance

document.forms[0].elements["dd"];

Where dd is a field in my form, how can I get the number of the element or
document.forms[0].elements[6];
automatically can I convert it somehow.

[PeterW]

Would document.forms[0].elements[0].name be what you are looking for? or are you looking to convert the name into index?

[PeterW]

aha.. I think you will have to use the name property and something like..

function getIndex(what,which)
{
for (var i=0;i < what.elements.length;i++)
{
if (what.elements[ i ].name == which) {return i;}
}
return -1;
}

alert( getIndex(document.forms[0], "dd") );

[freddydoesphp]

Why yes thanks