updated to add some alerts
1.) only whole numbers in input box
NOTE: you can take that out just delete this code
onkeypress="return (event.charCode == 8 || event.charCode == 0 || event.charCode == 13) ? null : event.charCode >= 48 && event.charCode <= 57"
2.) no copy and paste in input box
3.) no auto complete in input box
i will prob add some different alerts and maybe decimals but for now we only want/need whole number transfers