https://pbucc.org/templates/pb2017_featured1//html/mod_login/validate_custom.js

1jQuery(document).ready(function(){
2	jQuery('#username,#jform_username').keyup(function() {
3	   var val1 = jQuery(this).val();
4		var newVal ="";
5		if(val1.match(/^\d+$/)) {
6		while (val1.length > 4) {
7		  newVal += val1.substr(0, 4) + '-';
8           val1 = val1.substr(4);
9		   newVal += val1;
10         this.value = newVal;
11		 }
12		}
13	});	
14 });
15
16jQuery(window).on('load resize', function(){
17   //alert('here');	
18   var value = jQuery('.slideshowck').height();
19   var newtop = parseFloat(value/21).toFixed(2);
20  //var text = jQuery("form#login-form").css({top : newtop + 'px',position:'absolute'});
21    //alert(text); 
22   });