function show(selectItem) {
	var num;
	var lItem = document.getElementById(selectItem).parentNode.parentNode.childNodes;
	for (var i = 0; i < lItem.length; i++) {
		if (lItem[i].id) {
			num = lItem[i].id.split("tabAitem")[1];
			if (document.getElementById(selectItem).parentNode.id == lItem[i].id) {
				document.getElementById("tabAlink"+num).className = "tabAselected";
				document.getElementById("tabAitem"+num).className = "tabAselected";
				document.getElementById("tabAarrow"+num).className = "tabAselected";
				document.getElementById("tabAcontent"+num).className = "tabAselected";
			}
			else {
				document.getElementById("tabAlink"+num).className = "tabAnormal";
				document.getElementById("tabAitem"+num).className = "tabAnormal";
				document.getElementById("tabAarrow"+num).className = "tabAnormal";
				document.getElementById("tabAcontent"+num).className = "tabAnormal";
			}
		}
	}
}