JavaScript - onkey events

When ENTER is pressed - it's like the user clicked Continue button.
When ESC is pressed popup form is closed, like Close button is pressed.


<ice:inputText id="licensePlate" value="#{activeBackingBean.selectedEntity.licensePlate}" required="true" maxlength="20" autocomplete="off"
onkeypress="if((event.which == 13)){document.getElementById('licencePlateForm:continueButton').focus();}"
onkeydown="if((event.which == 27)){document.getElementById('licencePlateForm:closeButton').click();}" onkeyup="checkChar('licencePlateForm:licensePlate', 'an');">
<f:validateLength minimum="3" maximum="20" />
</ice:inputText>

ESC is not picked up by onkeypress!






//Provjerava uneseni znak, moguce postaviti uvijet: n - broj, an - broj ili slovo, a - slovo, lwr - mala slova, upr - velika slova
//dodatni znakovi ako su postavljeni onda se uz uvjet jos omogucuju
//(ako je postavljen uvijet ne dopusta unos drugih znakova)
//Koristiti s onkeyup
function checkChar(elem, uvijet, dodatni){

var numb = '0123456789';
var lwr = 'abcdefghijklmnopqrstuvwxyzšđčćž';
var upr = 'ABCDEFGHIJKLMNOPQRSTUVWXYZŠĐČĆŽ';

var obj = document.getElementById(elem);
var znak = obj.value.substring(obj.value.length-1);

if(uvijet != null){
if(uvijet == 'n' && numb.indexOf(znak) == -1){
if(dodatni != null){
if(dodatni.indexOf(znak) == -1){
deleteLastChar(obj);
}
}
else{
deleteLastChar(obj);
}
}
else if(uvijet == 'an' && numb.indexOf(znak) == -1 && lwr.indexOf(znak) == -1 && upr.indexOf(znak) == -1){
if(dodatni != null){
if(dodatni.indexOf(znak) == -1){
deleteLastChar(obj);
}
}
else{
deleteLastChar(obj);
}
}
else if(uvijet == 'a' && lwr.indexOf(znak) == -1 && upr.indexOf(znak) == -1){
if(dodatni != null){
if(dodatni.indexOf(znak) == -1){
deleteLastChar(obj);
}
}
else{
deleteLastChar(obj);
}
}
else if(uvijet == 'lwr' && lwr.indexOf(znak) == -1){
if(dodatni != null){
if(dodatni.indexOf(znak) == -1){
deleteLastChar(obj);
}
}
else{
deleteLastChar(obj);
}
}
else if(uvijet == 'upr' && upr.indexOf(znak) == -1){
if(dodatni != null){
if(dodatni.indexOf(znak) == -1){
deleteLastChar(obj);
}
}
else{
deleteLastChar(obj);
}
}
}
}

//Brise zadnji znak zadanog document.element objekta
function deleteLastChar(obj){
if(obj.value != null){
obj.value = obj.value.substring(0,obj.value.length-1);
}
}