function paymentAmount(donation) {
var doc=document.CasaDonate;
doc.amount.value=donation;
doc.amountOther.value="0";
}
function paymentOther(donation){
var doc=document.CasaDonate;
doc.amount.value="0";
}
function paymentFreeEnter(){
var doc=document.CasaDonate;
doc.amountSelect(6).checked=true;
doc.amount.value=doc.amountOther.value;
if (doc.amountOther.value=="0"){
doc.amountOther.value="";
}
}
function paymentFreeBlur(){
var doc=document.CasaDonate;
doc.amount.value=doc.amountOther.value;
}
function doSubmit(){
var doc=document.CasaDonate;
var checkc="0123456789.";
var s=doc.amountOther.value;
var slen=s.length;
for(i=0;i<slen;i++)
{
var c1=s.charAt(i);
var b1=checkc.indexOf(c1);
if(b1==-1) {
alert("Please enter a valid donation amount");
doc.amount.value="";
return;
}
}
if (doc.amount.value=="0"){
alert('Please enter a donation amount');
return;
}
if (doc.amount.value==""){
alert('Please enter a donation amount');
return;
}
else {
doc.submit();
}
}