Javascript Checkbox Images

So I found this code while trying to get a script to have custom check box images.

<script type="javascript">
//global variables that can be used by ALL the function son this page.
var inputs;
var imgFalse = 'false.png';
var imgTrue = 'true.png';

//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') == 'checkbox') {
            
            //create a new image
            var img = document.createElement('img');
            
            //check if the checkbox is checked
            if(inputs[i].checked) {
                img.src = imgTrue;
            } 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';
        }
    }
}

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

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

window.onload = init;
</script>

Code (markup):

The error comes up in this line of code:

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

Code (markup):

Where i<inputs the less than sign is breaking the XML parser. I am not sure how to get past this, if it helps the error is "Invalid XML: A name contained an invalid character."

Thanks.

 

See the difference ?

<script type="javascript">
//<![CDATA[

// ...

//]]>
</script>

Code (markup):