Question

Edit I think this what the OP meant

i have three select boxes with each 5 similar options. when I select an option from any of the select boxes it should disappear from the other two select boxes.

i have done work here js fiddle link: http://jsfiddle.net/thilakar/x66EN/13/

Note: Again select an option from any of the select boxes. the hidden option should display in the other two select boxes.

Answer 1

$(function() {
    var sbox = $('select.selectArea[name=fromBox]');
    $('select.selectArea').change(function() {
        var val = this.value,
            allVals = [];
        sbox.each(function() {
            allVals.push(this.value);
        });
        sbox.each(function(index, sel) {
           $('option:hidden', this).show();
           $('option', this).map(function(i, x) {
                if(this.value != '0' && $.inArray(this.value, allVals) != -1) {
                   $(this).hide();
                }
           });
        });
    });
});  

DEMO