function rotate(p_deg,imageid,canvasid) {
	if(document.getElementById(canvasid)) {
		/*
		Ok!: Firefox 2, Safari 3, Opera 9.5b2
		No: Opera 9.27
		*/
		var image = document.getElementById(imageid);
		var canvas = document.getElementById(canvasid);
		var canvasContext = canvas.getContext('2d');
		
		switch(p_deg) {
			default :
			case 0 :
				canvas.setAttribute('width', image.width);
				canvas.setAttribute('height', image.height);
				canvasContext.rotate(p_deg * Math.PI / 180);
				canvasContext.drawImage(image, 0, 0);
				break;
			case 90 :
				canvas.setAttribute('width', image.height);
				canvas.setAttribute('height', image.width);
				canvasContext.rotate(p_deg * Math.PI / 180);
				canvasContext.drawImage(image, 0, -image.height);
				break;
			case 180 :
				canvas.setAttribute('width', image.width);
				canvas.setAttribute('height', image.height);
				canvasContext.rotate(p_deg * Math.PI / 180);
				canvasContext.drawImage(image, -image.width, -image.height);
				break;
			case 270 :
			case -90 :
				canvas.setAttribute('width', image.height);
				canvas.setAttribute('height', image.width);
				canvasContext.rotate(p_deg * Math.PI / 180);
				canvasContext.drawImage(image, -image.width, 0);
				break;
		};
		
	} else {
		/*
		Ok!: MSIE 6 et 7
		*/
		var image = document.getElementById(imageid);
		switch(p_deg) {
			default :
			case 0 :
				image.style.filter = 'progid:DXImageTransform.Microsoft.BasicImage(rotation=0)';
				break;
			case 90 :
				image.style.filter = 'progid:DXImageTransform.Microsoft.BasicImage(rotation=1)';
				break;
			case 180 :
				image.style.filter = 'progid:DXImageTransform.Microsoft.BasicImage(rotation=2)';
				break;
			case 270 :
			case -90 :
				image.style.filter = 'progid:DXImageTransform.Microsoft.BasicImage(rotation=3)';
				break;
		};
		
	};
};