function twodecimals(event, obj) {
var $this = obj;
if ((event.which != 46 || $this.value.indexOf('.') != -1) &&
((event.which < 48 || event.which > 57) &&
(event.which != 0 && event.which != 8))) {
event.preventDefault();
}
var text = $this.value;
if ((event.which == 46) && (text.indexOf('.') == -1)) {
setTimeout(function () {
if ($this.value.substring($this.value.indexOf('.')).length > 2) {
$this.value($this.value.substring(0, $this.value.indexOf('.') + 2));
}
}, 1);
}
if ((text.indexOf('.') != -1) &&
(text.substring(text.indexOf('.')).length > 2) &&
(event.which != 0 && event.which != 8) &&
($this.selectionStart >= text.length - 2)) {
event.preventDefault();
}
}
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