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

				}

			}

		})

	

	})

}