function donationAmount(){

	var amount = document.memberForm.amount;

	//alert(amount);

	

	if( parseFloat(amount.value) < 10 ){ 

	

		//alert("You should donate 20 or more!");

		//document.memberForm.tshirt_type.disabled = false;

		document.memberForm.tshirt_type[0].disabled=true;

		document.memberForm.tshirt_type[1].disabled=true;
		
		document.memberForm.tshirt_type[2].disabled=true;

		document.memberForm.tshirt_size.disabled=true;

	 	

		alert("Thank you for your donation. Please keep in mind that if you make a donation of $10.00 or more you will receive a free t-shirt.");

		 

		 //amount.focus();

		

	 }	else if (amount.value == "" ) { 

	 

		 document.memberForm.tshirt_type[0].disabled=true;

		 document.memberForm.tshirt_type[1].disabled=true;
		 
		 document.memberForm.tshirt_type[2].disabled=true;

		 document.memberForm.tshirt_size.disabled=true;

		 

	 } else {

	 	document.memberForm.tshirt_type[0].disabled=false;

		document.memberForm.tshirt_type[1].disabled=false;
		
		document.memberForm.tshirt_type[2].disabled=false;

	 	document.memberForm.tshirt_size.disabled=false;

	 }

	 
	// if(document.memberForm.tshirt_type.value == "none"){
	// 		document.memberForm.tshirt_size.disabled=true;		
	// }
	 
}

function enableTSize(){
		document.memberForm.tshirt_size.disabled=false;
}

function disableTSize(){
		document.memberForm.tshirt_size.disabled=true;
}