/**
 * jQuery Plugin to obtain touch gestures from iPhone, iPod Touch and iPad, should also work with Android mobile phones (not tested yet!)
 * Common usage: wipe images (left and right to show the previous or next image)
 * 
 * @author Andreas Waltl, netCU Internetagentur (http://www.netcu.de)
 * @version 1.0 (15th July 2010)
 */
(function($){
	$.fn.touchwipe=function(settings) {
		var config={
			min_move_x:20,
			wipeLeft:function() { },
			wipeRight:function() { },
			preventDefaultEvents:true
		};
		if(settings)$.extend(config,settings);
		this.each(function(){
			var startX;
			var isMoving=false;
			function cancelTouch() {
				this.removeEventListener('touchmove',onTouchMove);
				startX=null;
				isMoving=false;
			} function onTouchMove(e) {
				if (config.preventDefaultEvents) {
					e.preventDefault();
				} if (isMoving){
					var x=e.touches[0].pageX;
					var dx=startX-x;if(Math.abs(dx)>=config.min_move_x){
						cancelTouch();
						if(dx>0){
							config.wipeLeft();
						} else {
							config.wipeRight();}
						}
					}
				} function onTouchStart(e) {
					if(e.touches.length==1) {
						startX=e.touches[0].pageX;
						isMoving=true;
						this.addEventListener('touchmove', onTouchMove, false);
					}
				}
				this.addEventListener('touchstart', onTouchStart, false);
			});
		return this;
	};
})(jQuery);