How to disable multiple select options

Question

How to disable multiple options in one select. For example i have 2 selects with 5 and 3 options. So if i select 3rd option in second select, i want to disable 3rd,4th and 5th o

Answer 1

Also you can disable them:

var ary=[3,4,5];
$('[name=smjer] option').filter(function(){
    return ($.inArray(parseInt(this.value),ary) >-1);
}).prop('disabled', true);