$(document).ready(function(){
	
	$('#natureof').change(function() {
										 
										  
		if($('#natureof').val() == 7) {
			//contactpostcode
		$('#contactpostcode').show();
			
		} else {
		//alert("0" + $('#natureof').val())	
		$('#contactpostcode').hide();
		}
											   });
		
	

							   });