var next;
var prev;

$(document).ready(function(){

	$('body').keydown(function(event){
		if(event.target.tagName.toLowerCase() == "input"){
			return true;
		}
		
		if(event.keyCode == 39){ //rechts
			window.location=next+"";
			event.preventDefault();
		} else if(event.keyCode == 37){ //links
			window.location=prev+"";
			event.preventDefault();
		}	
	});
});