https://allourideas.org/javascripts/label_over.js?1682618009

1jQuery.fn.labelOver = function(overClass) {
2	return this.each(function(){
3		var label = jQuery(this);
4		var f = label.attr('for');
5		if (f) {
6			var input = jQuery('#' + f);
7			
8			this.hide = function() {
9			  label.css({ textIndent: -10000 })
10			}
11			
12			this.show = function() {
13			  if (input.val() == '') label.css({ textIndent: 0 })
14			}
15
16			// handlers
17			input.focus(this.hide);
18			input.blur(this.show);
19		  label.addClass(overClass).click(function(){ input.focus() });
20			
21			if (input.val() != '') this.hide(); 
22		}
23	})
24}