(function($) {
	$.fn.imagezoom = function(options) {
		var settings = {
			xzoom: 400,
			yzoom: 370,
			offset: 10,
			position: "BTR",
			preload: 1
		};
		if (options) {
			$.extend(settings, options);
		}
		var noalt = '';
		var self = this;
		$(this).bind("mouseenter", function(ev) {
			var imageLeft = $(this).offset().left;
			var imageTop = $(this).offset().top;
			var imageWidth = $(this).get(0).offsetWidth;
			var imageHeight = $(this).get(0).offsetHeight;
			var boxLeft = $(this).parent().offset().left;
			var boxTop = $(this).parent().offset().top;
			var boxWidth = $(this).parent().width();
			var boxHeight = $(this).parent().height();
			noalt = $(this).attr("alt");
			var bigimage = $(this).attr("rel");
			$(this).attr("alt", '');
			if ($("div.zoomDiv").get().length == 0) {
				$(document.body).append("<div class='zoomDiv'><img class='bigimg' src='" + bigimage +
					"'/></div><div class='zoomMask'>&nbsp;</div>");
			}
			if (settings.position == "BTR") {
				if (boxLeft + boxWidth + settings.offset + settings.xzoom > screen.width) {
					leftpos = boxLeft - settings.offset - settings.xzoom;
				} else {
					leftpos = boxLeft + boxWidth + settings.offset;
				}
			} else {
				leftpos = imageLeft - settings.xzoom - settings.offset;
				if (leftpos < 0) {
					leftpos = imageLeft + imageWidth + settings.offset;
				}
			}
			$("div.zoomDiv").css({
				top: boxTop,
				left: leftpos
			});
			$("div.zoomDiv").width(settings.xzoom);
			$("div.zoomDiv").height(settings.yzoom);
			$("div.zoomDiv").show();
			$(this).css('cursor', 'crosshair');
			$(document.body).mousemove(function(e) {
				mouse = new MouseEvent(e);
				if (mouse.x < imageLeft || mouse.x > imageLeft + imageWidth || mouse.y < imageTop || mouse.y > imageTop +
					imageHeight) {
					mouseOutImage();
					return;
				}
				var bigwidth = $(".bigimg").get(0).offsetWidth;
				var bigheight = $(".bigimg").get(0).offsetHeight;
				var scaley = 'x';
				var scalex = 'y';
				if (isNaN(scalex) | isNaN(scaley)) {
					var scalex = (bigwidth / imageWidth);
					var scaley = (bigheight / imageHeight);
					$("div.zoomMask").width((settings.xzoom) / scalex);
					$("div.zoomMask").height((settings.yzoom) / scaley);
					$("div.zoomMask").css('visibility', 'visible');
				}
				xpos = mouse.x - $("div.zoomMask").width() / 2;
				ypos = mouse.y - $("div.zoomMask").height() / 2;
				xposs = mouse.x - $("div.zoomMask").width() / 2 - imageLeft;
				yposs = mouse.y - $("div.zoomMask").height() / 2 - imageTop;
				xpos = (mouse.x - $("div.zoomMask").width() / 2 < imageLeft) ? imageLeft : (mouse.x + $("div.zoomMask").width() /
					2 > imageWidth + imageLeft) ? (imageWidth + imageLeft - $("div.zoomMask").width()) : xpos;
				ypos = (mouse.y - $("div.zoomMask").height() / 2 < imageTop) ? imageTop : (mouse.y + $("div.zoomMask").height() /
					2 > imageHeight + imageTop) ? (imageHeight + imageTop - $("div.zoomMask").height()) : ypos;
				$("div.zoomMask").css({
					top: ypos,
					left: xpos
				});
				$("div.zoomDiv").get(0).scrollLeft = xposs * scalex;
				$("div.zoomDiv").get(0).scrollTop = yposs * scaley;
			});
		});

		function mouseOutImage() {
			$(self).attr("alt", noalt);
			$(document.body).unbind("mousemove");
			$("div.zoomMask").remove();
			$("div.zoomDiv").remove();
		}
		count = 0;
		if (settings.preload) {
			$('body').append("<div style='display:none;' class='jqPreload" + count + "'></div>");
			$(this).each(function() {
				var imagetopreload = $(this).attr("rel");
				var content = jQuery('div.jqPreload' + count + '').html();
				jQuery('div.jqPreload' + count + '').html(content + '<img src=\"' + imagetopreload + '\">');
			});
		}
	}
})(jQuery);

function MouseEvent(e) {
	this.x = e.pageX;
	this.y = e.pageY;
}