function calculateRewards(){
	var sp = parseInt(document.getElementById("spending").value);
	if (! isNaN(sp)){
		document.getElementById("monthly").innerHTML = "$" + (sp * (0.01));
		document.getElementById("yearly").innerHTML = "$" + (sp * (0.01) * 12);
		
	}else{
		alert("Enter a number for monthly spending");
	}
	
}