check tick box is ticked...

I need to see if a check box is ticked

at the moment i am using the code.

..

		

else if (document.callback.terms.value <= "")
    {
      alert ("You must accept the terms and conditions");
      return false;
    }

Code (markup):

but this isnt working. Please advise.

Thanks

 

You shouldn't have a checkbox outside of a form.

<form action="">
<input type="checkbox" name="agree">
</form>


if (document.forms[0]['agree'].checked)
        {
            //do something
        }
else   {
           // do something else
        }

Code (markup):

 

See my code below. This will get you what you want:
<script type="text/JavaScript">
<!--
function waterbrook()
{
if (document.trotwood.steerforth.value !="James" && document.trotwood.steerforth.value != "james")
{
alert ("Error. Try again.");
return false;
}
if (document.trotwood.steerforth.value == "")
{
alert ("Error. Try again.");
return false;
}
if (document.trotwood.wickfield.checked == false)
{
alert ("Check the box, please!");
return false;
}
return true;
}
// -->
</script>