HTML form question

@Michael2003Jul 24.2004 — #Well if you first give the <form> a name (fmax in this case) you can then refer to its elements easily. Then you need to put a onchange event handler on each <input>. I'd suggest using a script to do this because it would take a long time to do it individually because there are so many of them. Then you need to have a function that runs through all the elements in a form, counts the number that is checked and disables them once they are all checked. So, in your page somewhere:

[code=php]<script type="text/javascript">
 for(i=0; i<document.fmax.elements.length; i++){
 document.fmax.elements[i].onchange = check;
 }
 function check(){
 checks = 0;
 for(i=0; i<document.fmax.elements.length; i++){
 if(document.fmax.elements[i].checked == true){
 checks++;
 }
 if(checks>3){
 for(i=0; i<document.fmax.elements.length; i++){
 document.fmax.elements[i].disabled = true;
 }}}}
 </script>[/code]

However, I would suggest not disabling the ones that are checked since then a user is locked into their first choice, even if they see a better option.

HTML form question

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