Clean whitespaces from IBAN when pasting it on BPINet

bpinet_clean_iban.js

//Add as many IBAN / NIB field IDs as you want
var ibanFields = [
    "LT_BPINet_wt1_block_wtMainContent_CS_ClienteCanais_wt42_block_WebPatterns_wt581_block_wtContent_LT_BPI_Patterns_wtDadosBeneficiarioNacional_block_wtForm_LT_BPI_Patterns_wtRowIBAN_block_wtRow_LT_BPI_Patterns_wtIBAN_block_wtInput_wtTxtIBAN",
    "LT_BPINet_wt20_block_wtMainContent_CS_Transferencias_wt12_block_wt3_WebPatterns_wt820_block_wtContent_LT_BPI_Patterns_wtfmFomularioDadosTranferencia_block_wtForm_LT_BPI_Patterns_wttxtIBAN_block_wtRow_LT_BPI_Patterns_wt652_block_wtInput_wttxtIBAN2",
    "LT_BPINet_wt60_block_wtMainContent_CS_Transferencias_wt68_block_WebPatterns_wt273_block_wtContent_LT_BPI_Patterns_wt999_block_wtForm_LT_BPI_Patterns_wt442_block_wtRow_LT_BPI_Patterns_wt55_block_wtInput_wttxtContaIBANDestinatario"
];

//Add the event listener
for (var i = 0, len = ibanFields.length; i < len; i++) {
    if ( el=document.getElementById(ibanFields[i]) ) el.addEventListener('paste', cleanIban);
}

//Clean it on paste!
function cleanIban(e) {
    e.stopPropagation();
    e.preventDefault();
    var clipboardData = e.clipboardData || window.clipboardData;
    var iban = clipboardData.getData('Text');
    iban = iban.replace(/\s/g,'');
    document.getElementById(this.id).value = iban;
}

You can use "Custom JavaScript for websites" to add this snippet to bpinet.pt

You can also change the ibanFields array to use it on other homebanking systems.

This is quick and dirty. Can, and should, be improved.