
JQuery is a wonderful kit of code which can be reused by just calling the robustly written scripts. Its free to use and is in a Javascript. Its already used in Wordpress, so you do not need to re-write the code in your plugin
I am currently working on a Wordpress plugin to Manage multiple Wordpress blogs from a single blog.
function add_tinymce() { wp_admin_css('thickbox'); wp_print_scripts('jquery-ui-core'); wp_print_scripts('jquery-ui-tabs'); wp_print_scripts('editor'); add_thickbox(); wp_print_scripts('media-upload'); wp_enqueue_script('wp_tiny_mce'); wp_tiny_mce(); }
There are lots of features that you can re-use like the events, ajax, effects which are very useful to convert long functions to simple ones without re-writing your own functions.
Most of the functions in JQuery are customizable, so it should serve your needs.
I have used the ajax, effects and event functions in my plugin
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