jQuery.fn.rotateIE = function(angle,whence) {
        var p = this.get(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')";
        } else {
                var canvas = document.createElement('canvas');
                if (!p.oImage) {
                        canvas.oImage = new Image();
                        canvas.oImage.src = p.src;
                } else {
                        canvas.oImage = p.oImage;
                }


                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);
}


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


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