Expand a few comments. One as per Nikerabbit's comment on r59695.

[mediawiki.git] / skins / common / htmlform.js

// Find select-or-other fields.
addOnloadHook( function() {
        var fields = getElementsByClassName( document, 'select', 'mw-htmlform-select-or-other' );
        
        for( var i = 0; i < fields.length; i++ ) {
                var select = fields[i];
                
                addHandler( select, 'change', htmlforms.selectOrOtherSelectChanged );
                
                // Use a fake 'e' to update it.
                htmlforms.selectOrOtherSelectChanged( { 'target': select } );
        }
} );

var htmlforms = {
        'selectOrOtherSelectChanged' : function(e) {
                var select;
                if (!e) e = window.event;
                if (e.target) select = e.target;
                else if (e.srcElement) select = e.srcElement;
                if (select.nodeType == 3) // defeat Safari bug
                        select = select.parentNode;
                
                var id = select.id;
                var textbox = document.getElementById( id+'-other' );
                
                if (select.value == 'other') {
                        textbox.disabled = false;
                } else {
                        textbox.disabled = true;
                }
        }
}