Mine

function checkservice3(document.forms.orderform.value) {
var services = new Array(2);
services[0]='webhosting';
services[1]='gameservers';

for (i=0; i<2; i++) {
if (document.forms.orderform.value == services[i])
{ services[i].style.visibility='visible'; }
else { services[i].style.visibility='hidden'; }
}

}