function freeart()
{

var val=document.art.art.selectedIndex;

if (val=='0') {
	

	changeCost();
} else{
	alert('1');

}
}

function code(art)
{
var elem;
elem= document.getElementById(art);
if (elem.value=="SP09JJA" ||elem.value=="sp09jja" ){


changeCost();

myelem=document.getElementById('artwork');
myelem.readonly="true";
myelem.value="Voucher Accepted";

myelem2=document.getElementById('artwork2');
myelem2.readonly="true";
myelem2.value="Voucher Accepted";
}else{



}
} 

function changeCost(){
document.getElementById("1").value="5518291";
document.getElementById("2").value="5518305";
document.getElementById("3").value="5518314";
document.getElementById("4").value="5518478";

}
function changeCost2(){
document.getElementById("1").value="5518618";
document.getElementById("2").value="5518796";
document.getElementById("3").value="5518817";
document.getElementById("4").value="5518827";

}