onHeaderClick

fires on clicking the column header

boolean onHeaderClick(object header,object event,element target);

header	object	the column header
event	object	the native HTML event
target	element	an HTML element on which a click was caught

boolean

returning false will prevent further actions: headermenu opening, sorting, etc.

$$("datatable1").attachEvent("onHeaderClick", function(header, event, target){
    this.sort({ by:header.column });
});

Details

The first parameter of the handler function is the column header, e.g: {column:"columnId"}.

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