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var checkbox1, checkbox2;
 function forceOrder( el ) {
 if ( checkbox1 === undefined ){
 checkbox1 = document.getElementById('orderimportant1');
 checkbox2 = document.getElementById('orderimportant2');
 }
 
 checkbox1.checked = !el.checked;
 checkbox2.checked = !el.checked;
 checkbox1.disabled = el.checked;
 checkbox2.disabled = el.checked;
 }
 
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