The usage of Element.up( parameter ) is extreme slugish in combination
with IE and a big page (tested page is 300k).
If you would do a $('element').up(1) its more than 100 times slower
than doing $('element').up().up(). (this is the workaround for those
who dont want to edit their prototype.js)
That most likely results from the element.ancestors() call inside up.
up: function(element, expression, index) {
element = $(element);
if (arguments.length == 1) return $(element.parentNode);
var ancestors = element.ancestors();
return expression ? Selector.findElement(ancestors, expression,
index) :
ancestors[index || 0];
},
an fix might be this:
up: function(element, expression, index) {
element = $(element);
if (arguments.length == 1 || ( !expression && index == 0 ) )
return $(element.parentNode);
return expression ? Selector.findElement(element.ancestors(),
expression, index) :
element.up( index-1 );
},
i try that later, but atm i only have protactulous on my server, maybe
someone here has a better solution?
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