function validate(form) {
	
	var valid = true;
	msg = "";
	if (form.os0.value == "" || form.os0.value == " " || form.os0.value == "  " || form.os0.value == "   " || form.os0.value == "    " || form.os0.value == "     " ) {
		msg += "Please choose where you heard about us from.\n";
		valid = false;
	}

	
	if (valid) {
		
		// Promo Code (until Nov 15, 2005)
		if ( (form.pcode.value == "USF") || (form.pcode.value == "usf") ) { 
			form.shipping.value = "0";
			form.item_name.value = form.item_name_root.value + " [ Free Shipping ]";
		}
	}
	
	///Promo Code 15% off our products (new code "BCD08" added April 21st, 2008)
	if ( (form.pcode.value == "BCD08") || (form.pcode.value == "bcd08") || (form.pcode.value == "BCDO8") || (form.pcode.value == "bcdo8") ) { 					
		form.amount.value = Math.round(form.amount.value * 0.85*100)/100; note = "Baby Care DVDs 15% discount";
	}

	//Promo Code (until June 30th, 2007)
	if ( (form.item_name_root.value == "First Year Boxed Set DVD") && (form.pcode.value == "SOMCBE") || (form.pcode.value == "somcbe") ) { 					
		form.amount.value = 23.97; note = "40% discount"; 
	}
	if (!valid)	alert(msg);
	return valid;
}