Selecting all checkboxes with Prootype

For creating a "Select All Checkboxes" link in javascript:

function CheckAll()
{
var allCheckboxes = $$('input[type=checkbox]');
allCheckboxes.each(function(e) { e.click(); });
}

Don't use e.checked = true, because it doesn't trigger the Grid_Item_CheckChanged events of the ComponentArt grid.