apply readonly option & remove it

[ishakya]

Hi all,

I need to remove read only option to a set of text boxes when a check box is checked.I have done that part.But i want to apply read only option again when earlier check box is unchecked.

Here is the code to remove read only.

function closeObject(someID,someID1,someID2,someID3)
{
document.getElementById(someID).removeAttribute('readonly');
document.getElementById(someID1).removeAttribute('readonly');
document.getElementById(someID2).removeAttribute('readonly');
document.getElementById(someID3).removeAttribute('readonly');

//document.getElementById(someID).value ='NEW';

}

So i need to apply read only again when the check box is unchecked.

Need a quick response please!!!!!!!!