Disable Enter key form automatic submission implementation code

//Disable the Enter key form automatic submission
= function(event) {
var target, code, tag;
if (!event) {
event = ; //For ie browser
target = ;
code = ;
if (code == 13) {
tag = ;
if (tag == "TEXTAREA") { return true; }
else { return false; }
}
}
else {
target = ; //For browsers that follow the w3c standard, such as Firefox
code = ;
if (code == 13) {
tag = ;
if (tag == "INPUT") { return false; }
else { return true; }
}
}
};