Tag won't work with IE6/7/8

[knightq]

Due to this:

, show: function () {
    ...
    that.element.parent().prepend(that.element.detach().attr('type', 'hidden'))
    ...

Prior to version 1.9, jQuery would throw an exception in all browsers for any attempt to set the type attribute on an input or button element. This was done to accommodate the lowest common denominator; IE 6/7/8 throw an error if you attempt to change the type of an input element. As of jQuery 1.9, we allow you to set the type of an element if the browser allows it. However, your own code will need to be aware that attempting to do this on oldIE will still throw an error. The jQuery Migrate plugin warns when you attempt to set the type attribute but does not throw a JavaScript error."

See here on StackOverflow the problem.