// JavaScript Document
//global variables that can be used by ALL the function son this page.
var inputs;
var imgFalse = 'images/radio_off.png';
var imgTrue = 'images/radio_on.png';
var selectedItem=null;



//this function runs when the page is loaded, put all your other onload stuff in here too.
function init() {
    replaceChecks();
}

function replaceChecks() {
    

    


    //get all the input fields on the page
    inputs = document.getElementsByTagName('input');

    //cycle trough the input fields
    for(var i=0; i < inputs.length; i++) {

        //check if the input is a checkbox
        if(inputs[i].getAttribute('type') == 'radio') {
            
            //create a new image
            var img = document.createElement('img');
            
            //check if the checkbox is checked
            if(inputs[i].checked) {

                img.src = imgTrue;
                selectedItem=img;  
            } 
            else {
                img.src = imgFalse;
            }

            //set image ID and onclick action
            img.id = 'checkImage'+i;
            //set image
            img.onclick = new Function('checkChange('+i+')');
            //place image in front of the checkbox
            inputs[i].parentNode.insertBefore(img, inputs[i]);
            
            //hide the checkbox
            inputs[i].style.display='none';

            inputs[i].className='outtaHere';
        }
		
    }
}

//change the checkbox status and the replacement image
function checkChange(i) {

    if(!inputs[i].checked) 
     {
        if(selectedItem) selectedItem.src= imgFalse;  
        inputs[i].checked = 'checked';
        document.getElementById('checkImage'+i).src=imgTrue;
        selectedItem=document.getElementById('checkImage'+i);
    }
}



function selectVirtual(obj)
{
  
    //cycle trough the input fields
    for(var i=0; i < inputs.length; i++) 
      {
        //check if the input is a checkbox
        if(inputs[i].getAttribute('type') == 'radio') 
          {

               if(inputs[i]==obj) 
               {
               
                 if(selectedItem) selectedItem.src= imgFalse;  
                 inputs[i].checked = 'checked';
                 document.getElementById('checkImage'+i).src=imgTrue;
                 selectedItem=document.getElementById('checkImage'+i);            
                
                 break;   
                 
               }

          }
                  
     }

   
}




window.onload = init;