#blocco { width:456px; height:19px;}
.pad_menu 	{margin-left:7px; margin-top:4px; height:19px;}

#menu     		{width: 456px; height:19px; position: relative; margin:0; padding:0; background:url(../img/head_btn.gif) no-repeat 0 0; }
#menu li 		{height: 19px; display: block; position: absolute; background:url(../img/head_btn.gif) no-repeat 0 0; }
#menu a    		{height: 19px; display: block; text-decoration:none; }

#menu #button1 { background-position: 0px -38px;  left:0; width: 50px;}
#menu #button2 { background-position: -55px  -38px;  left:55px; width:125px;}
#menu #button3 { background-position: -182px  -38px;  left: 182px; width: 132px;}
#menu #button4 { background-position: -317px -38px;  left: 317px; width: 62px;}
#menu #button5 { background-position: -381px -38px;  left: 381px; width: 73px;}

#menu #button1 a:hover {background:url(../img/head_btn.gif) no-repeat 0px -19px;  }
#menu #button2 a:hover {background:url(../img/head_btn.gif) no-repeat -55px -19px; }
#menu #button3 a:hover {background:url(../img/head_btn.gif) no-repeat -182px -19px; }
#menu #button4 a:hover {background:url(../img/head_btn.gif) no-repeat -317px -19px; }
#menu #button5 a:hover {background:url(../img/head_btn.gif) no-repeat -381px -19px;  }