jQuery.fn.rotate=function(angle,whence){var p=this.get(0);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.rotate(angle==undefined?90:angle);}
jQuery.fn.rotateLeft=function(angle){this.rotate(angle==undefined?-90:-angle);}