$(function() {
		calculate();
		$( "#slider_width" ).slider({
			value: $( "#print_width" ).val(),
			min: 1,
			max: 10000,
			slide: function( event, ui ) {
				$( "#print_width" ).val( ui.value );
				calculate();
			}

		});
		$( "#slider_height" ).slider({
			value: $( "#print_height" ).val(),
			min: 1,
			max: 50000,
			slide: function( event, ui ) {
				$( "#print_height" ).val( ui.value );
				calculate();
			}

		});
		$( "#print_width" ).keyup(function() { 
			$( "#slider_width" ).slider({
				value: $( "#print_width" ).val()
			}); 
		});
		$( "#print_height" ).keyup(function() { 
			$( "#slider_height" ).slider({
				value: $( "#print_height" ).val()
			}); 
		});

	});
	function check_range(n,down,up) {
		if (n>=down && n<up) {return true;}
		else {return false;}
	}