/*定义菜单外壳*/
#globalheader { width: 750px; height: 26px;  position: relative; z-index: 9998; float:right; margin-top:20px;}
#globalheader #globalnav { margin: 0; padding: 0; }
#globalheader #globalnav li { display: inline; }
#globalheader #globalnav li a { float: left; width: 92px; height: 0; padding-top: 26px; overflow: hidden; margin:0 25px;}
#globalheader #globalnav li a,
#globalheader #globalsearch {
	background-image: url(images/menu.gif);
	background-repeat: no-repeat;
}

/* BUTTONS */
#globalheader #globalnav li#gn-home a { background-position: 0 0; width: 55px;}
#globalheader #globalnav li#gn-about a { background-position: -55px 0; width: 85px;}
#globalheader #globalnav li#gn-pro a { background-position: -140px 0; width: 90px;}
#globalheader #globalnav li#gn-down a { background-position: -230px 0; width: 132px;}
#globalheader #globalnav li#gn-contact a { background-position: -362px 0; width: 106px;}

/* OVER STATES */
#globalheader #globalnav li#gn-home a:hover { background-position: 0 -26px; }
#globalheader #globalnav li#gn-about a:hover { background-position: -55px -26px; }
#globalheader #globalnav li#gn-pro a:hover { background-position: -140px -26px; }
#globalheader #globalnav li#gn-down a:hover { background-position: -230px -26px; }
#globalheader #globalnav li#gn-contact a:hover { background-position: -362px -26px; }

/* PRESSED STATES */
#globalheader #globalnav li#gn-home a:active { background-position: 0 -52px; }
#globalheader #globalnav li#gn-about a:active { background-position: -55px -52px; }
#globalheader #globalnav li#gn-pro a:active { background-position: -140px -52px; }
#globalheader #globalnav li#gn-down a:active { background-position: -230px -52px; }
#globalheader #globalnav li#gn-contact a:active { background-position: -362px -52px; }

/* ON STATES */
#globalheader.home #globalnav li#gn-home a { background-position: 0 -78px !important;  }
#globalheader.about #globalnav li#gn-about a { background-position: -55px -78px !important;  }
#globalheader.pro #globalnav li#gn-pro a { background-position: -140px -78px !important;  }
#globalheader.down #globalnav li#gn-down a { background-position: -230px -78px !important;  }
#globalheader.contact #globalnav li#gn-contact a { background-position: -362px -78px !important;  }

#menu_tree{
	float:left;
	position:relative;
	width:285px;
	height:23px;
	background-image:url(images/menu_tree.gif);
	margin-left:45px;
	padding-top:22px;
	}