offset = 3;
imgX = 0;

function rotate()
{
	imgWidth = document.srcPic.width;
	document.getElementById("Lay").style.left = imgX;
	imgX = imgX + offset;
	if (imgX < -imgWidth) imgX = 0;
	if (imgX > 0) imgX = -imgWidth;
}

function setOffset(n)
{
	offset = n;
}


function rotate_half()
{
	imgWidth = document.srcPic.width;
	limitX = (imgWidth - getWidth());
	document.getElementById("Lay").style.left = imgX;
	imgX = imgX + offset;
	if (limitX < 0){
		offset = 0;
		imgX = 0;
	}else{
		if (imgX < -limitX) offset = -offset;
		if (imgX > 0) offset = -offset;
	}
}

function getWidth()
{
/*
	if(document.all){
		return(document.body.clientWidth);
	}else if(document.layers){
		return(innerWidth);
	}else{
		return(-1);
	}
*/
	return(650);
}