How to change this IF to allow selection between two numbers only?
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I am using a jQuery script and the main part is below. It allows me to select up to 4 items. Until there are 5 selections made, there is an error message.

How can I change this so that the error message appears if the choices are less than 2 and more than 5, and the success message is shown when the choices are between them?

			if( $(this).multiselect("widget").find("input:checked").length > 5 ){
				warning.addClass("error").removeClass("success").html("You can only check two checkboxes!");
				return false;
			} else {
				warning.addClass("success").removeClass("error").html("Check a few boxes.");
			}