How to activate/deactivate rcrop on a image?

[ditlef9]

Is it possible to somehow unload rcrop on a image? I tried to set the grid to false, but that doesnt help. How can I deactivate rcrop on a image?

<script>
$(document).ready(function(){
		// Activate or deactivate crop
		var cropIsActive = 1; // some variable that holds the state
		if(cropIsActive === '1'){
			$('#imgx').rcrop({
				grid : true
			});

		}
		else{
			$('#imgx').rcrop({
				grid : false
			});
		}
});
</script>