// JavaScript Document
<!-- 
 var formblock;
 var forminputs; 
 function prepare() 
 {  
  formblock= document.getElementById('form_id');  
  forminputs = formblock.getElementsByTagName('input');
 } 
 function select_all(name, value) 
 {  
  for (i = 0; i < forminputs.length; i++) 
  {    // regex here to check name attribute    
   var regex = new RegExp(name, "i");    
   if (regex.test(forminputs[i].getAttribute('name'))) 
   {      
    if (value == '1') 
	{        
	 forminputs[i].checked = true;      
	} 
	else 
	{        
	 forminputs[i].checked = false;  
	}    
   }  
  }
 } 
 if (window.addEventListener) 
 {  
  window.addEventListener("load", prepare, false);
 } 
 else if (window.attachEvent) 
 {  
  window.attachEvent("onload", prepare)
 } 
 else if (document.getElementById) 
 {  
  window.onload = prepare;
 }