textbox readonly/lock 하기

// Set Text Value
function setTextBox(txtName,val)
{
    var textbox = igtbl_getElementById(txtName);
    textbox.innerText = jsTrim(val) ;
}
// Lock Textbox
function lockTextbox(txtName, lock)
{
    var textbox = igtbl_getElementById(txtName);
    textbox.readOnly = lock ;
}