Disable checkbox

[system]

I’m trying to disable this checkbox so it cannot be changed. Any help would be appreciated. This is my code below. Thanks in advance

<input <?php if (!(strcmp($row['Incident_Email_Group_LE'],"X"))) {echo "checked=\"checked\"";} ?> name=“email_LE” type=“checkbox” id=“email_LE” value=“X” style=“background-color:#CFECEC”//>

[Topcoder]

<input <?php if (!(strcmp($row['Incident_Email_Group_LE'],"X"))) {echo "checked=\"checked\"";} ?> name=“email_LE” type=“checkbox” id=“email_LE” value=“X” disabled readonly style=“background-color:#CFECEC”//>