/*Image Bubbles Effect (April 4th, 2010)
* This notice must stay intact for usage 
* Author: Dynamic Drive at http://www.dynamicdrive.com/
* Visit http://www.dynamicdrive.com/ for full source code
*/

jQuery.fn.imgbubbles = function (options) {
    var $ = jQuery

    var setting = $.extend({}, { factor: 2, speed: 'fast' }, options) //merge options w/ default settings
    return this.each(function () { //return jQuery obj
        var $bubblewrap = $(this)
        var $imgs = $bubblewrap.find('li img')
        $imgs.each(function () {
            var $img = $(this)
            var $parentli = $img.offsetParent()
            var od = { width: this.offsetWidth, height: this.offsetHeight} //original dimensions of image
            var nd = { width: od.width * setting.factor, height: od.height * setting.factor} //enlarged dimensions of image
            var ncoords = [-(nd.width - od.width) / 2, -(nd.height - od.height) / 2] //coords to move enlarged image to
            $img.data("specs", { //cache image specs
                od: od,
                nd: nd,
                ncoords: ncoords
            })
            if ($img.attr('alt')) { //if tooltip for image defined
                var $tip = $('<div class="tooltip" style="z-index:1001" />').html($img.attr('alt')).css('visibility', 'hidden').appendTo($img.offsetParent())
                var tipd = { width: $tip.outerWidth(), height: $tip.outerHeight()} //tip dimensions
                $tip.data("specs", {
                    d: tipd,
                    ocoords: [ncoords[0] - tipd.width / 2 + nd.width / 2, ncoords[1] - tipd.height / 2], //resting tip coords
                    ncoords: [-tipd.width / 2 + od.width / 2, -tipd.height] //tip coords to animate to
                })
                $img.data('$tip', $tip)
            }
        })

        $bubblewrap.mouseover(function (e) {
            if (e.target.tagName == "IMG") {
                var $img = $(e.target), $tip = $img.data('$tip')
                var imgspecs = $img.data('specs')
                var ncoords = imgspecs.ncoords
                var od = imgspecs.od
                var nd = imgspecs.nd
                $img.stop().css('zIndex', 1000).animate({ left: ncoords[0], top: ncoords[1], width: nd.width, height: nd.height }, setting.speed) //animate image
                if ($img.attr('alt')) {
                    var tipspecs = $tip.data("specs")
                    $tip.css({ zIndex: 1000, visibility: 'visible', left: -tipspecs.d.width / 2 + od.width / 2, top: -tipspecs.d.height })
						.animate({ left: ncoords[0] - tipspecs.d.width / 2 + nd.width / 2, top: ncoords[1] - tipspecs.d.height }, setting.speed) //animate tip			
                }
            }
        })

        $bubblewrap.mouseout(function (e) {
            if (e.target.tagName == "IMG") {
                var $img = $(e.target), $tip = $img.data('$tip')
                var imgspecs = $img.data('specs')
                var od = imgspecs.od
                var nd = imgspecs.nd
                $img.stop().css('zIndex', 999).animate({ left: 0, top: 0, width: od.width, height: od.height }, setting.speed) //animate image
                if ($img.attr('alt')) {
                    var tipspecs = $tip.data("specs")
                    $tip.css({ zIndex: 999, visibility: 'hidden' }) //hide tip
                }
            }
        })

    })
}