var random_number_num;
function printTurningNumber(){
	//all the turning number images
	var turning_number_images = ['','images/turning_numbers/turning_number1.jpg','images/turning_numbers/turning_number2.jpg','images/turning_numbers/turning_number3.jpg','images/turning_numbers/turning_number4.jpg','images/turning_numbers/turning_number5.jpg','images/turning_numbers/turning_number6.jpg'];
	var turning_numbers = ['','481984','518939','971394','516052','384976','835724'];
	
	//generate random number and show the turning number image
	var random_number_img = Math.floor(Math.random()*6+1);
	var target = document.getElementById('turning_number_image');
	target.src = turning_number_images[random_number_img];
	
	//current random number
	random_number_num = turning_numbers[random_number_img];
	
	//set the value of the hidden form element representing the turning number 
	document.getElementById('turning_img_number').value = random_number_img;
}