function checkfields(form){
		
	if (form.chargetotal.value == ""){
		alert("Please enter your donation amount.");
		form.chargetotal.focus();
		return false;
		}
	
	if (form.installments.value == ""){
		alert("Please enter the number of monthly installments.");
		form.installments.focus();
		return false;
		}
		
		return true;	
}