Tak se podívej do zrojového kódu ne?

#jqhint {
  text-align: left;
  display: none;
  position: absolute;
  margin-right: 20px;
  font-size: 1px;
  z-index: 10000;
}
IMG.jqhint {
	VERTICAL-ALIGN: middle;
}
IMG.jqhint_help {
	float: right;
	POSITION: relative;
	TOP: 4px;
	CURSOR: help;
}
IMG.jqhint_help_red {
	POSITION: relative;
	TOP: 4px;
	LEFT: 10px;
	CURSOR: help;
	DISPLAY: none;
}
#jqhint_img {
  margin: 0 20px;
}
#jqhint_text {
  background-color: black;
  color: white;
  margin: 0;
  padding: 1px 10px;
  text-align: left;
  font-family: Arial;
  font-weight: normal;
  line-height: 17px;
  font-size: 12px;
}
div.jqhint_lt,div.jqhint_rt,div.jqhint_tb,div.jqhint_lb,div.jqhint_rb {
  height: 5px;
  max-height:5px;
  font-size:1px;
  margin: 0;
}
div.jqhint_lt {background:url("/img/hint-lt.png") 0 0 no-repeat;}
div.jqhint_rt {background:url("/img/hint-rt.png") 100% 0 no-repeat;}
div.jqhint_lb {background:url("/img/hint-lb.png") 0 0 no-repeat;}
div.jqhint_rb {background:url("/img/hint-rb.png") 100% 0 no-repeat;}
div.jqhint_tb {background-color:#000; margin:0 5px;}