jQuery.fn.rotate = function(angle,whence) {
	return this.each(function() {
		if (!jQuery.browser.safari) {
		
			var p = $(this)[0];

			// we store the angle inside the image tag for persistence
			if (!whence) {
				p.angle = ((p.angle==undefined?0:p.angle) + angle) % 360;
			} else {
				p.angle = angle;
			}

			if (p.angle >= 0) {
				var rotation = Math.PI * p.angle / 180;
			} else {
				var rotation = Math.PI * (360+p.angle) / 180;
			}
			var costheta = Math.cos(rotation);
			var sintheta = Math.sin(rotation);

			if (document.all && !window.opera) {
				var canvas = document.createElement('img');

				canvas.src = p.src;
				canvas.height = p.height;
				canvas.width = p.width;

				canvas.style.filter = "progid:DXImageTransform.Microsoft.Matrix(M11="+costheta+",M12="+(-sintheta)+",M21="+sintheta+",M22="+costheta+",SizingMethod='auto expand')";
				canvas.id = p.id;
				canvas.angle = p.angle;
				p.parentNode.replaceChild(canvas, p);
			} else {
				var canvas = document.createElement('canvas');
				$img = $("<img>");
				$img.load(function() {
					canvas.style.width = canvas.width = Math.abs(costheta*canvas.oImage.width) + Math.abs(sintheta*canvas.oImage.height);
					canvas.style.height = canvas.height = Math.abs(costheta*canvas.oImage.height) + Math.abs(sintheta*canvas.oImage.width);
					var context = canvas.getContext('2d');
					context.save();
					if (rotation <= Math.PI/2) {
						context.translate(sintheta*canvas.oImage.height,0);
					} else if (rotation <= Math.PI) {
						context.translate(canvas.width,-costheta*canvas.oImage.height);
					} else if (rotation <= 1.5*Math.PI) {
						context.translate(-costheta*canvas.oImage.width,canvas.height);
					} else {
						context.translate(0,-sintheta*canvas.oImage.width);
					}
					context.rotate(rotation);
					context.drawImage(canvas.oImage, 0, 0, canvas.oImage.width, canvas.oImage.height);
					context.restore();
					canvas.id = p.id;
					canvas.angle = p.angle;
					p.parentNode.replaceChild(canvas, p);
				});
				$img.attr("src", p.src);
				canvas.oImage = $img[0];
			}
		}
	});
}

jQuery.fn.rotateRight = function(angle) {
	this.rotate(angle==undefined?90:angle);
}

jQuery.fn.rotateLeft = function(angle) {
	this.rotate(angle==undefined?-90:-angle);
}