how can i treat a form as an array??

ok guys i have a form that has lots of elements on it
selection boxes,check boxes,input boxes.

i have this specific
<select name"race" onChange="selectrace()">
</select>

and my function is selectrace is a huge function that make lots of other select boxes from disabled to enabled and so on

my problem is that i keep adding select boxes, so i want to find a way that dynnamically it will find all selectboxes that there substring(6,8)==something to turn them on and off

here is an image to get an idea

http://www.mu-saga.com/calculators/ss.gif

function disable_form1() {
for ( var i=0; i<document.form1.elements.length; i++ ) {

if(document.form1.elements[i].disabled==true){
document.form1.elements[i].disabled=false
}else{
document.form1.elements[i].disabled=true
}
}
}
// -->
</script>

all you need to do is add an IF statement around the existing if statement that evaluates the name to see if it matches the criteria you specified. This will allow you to turn the combo boxes off and on

man you are a LIFE SAVIOUR

just cleaned around 200 lines of uneeded code
thx a million