function chLang(lang) {
	var link = parent.location.href;
	var endLink = link.length;
	var i;
	var n;
	var found = 0;
	
	for(i = 0; i <= endLink; i++) {
		n = i + 3;
		if (link.substring(i, n) == "eng") {
			chLink = link.substring(0, i) + lang + link.substring(n, endLink);
			break;
		}
				else if (link.substring(i, n) == "chi") {
			chLink = link.substring(0, i) + lang + link.substring(n, endLink);
			break;
		}
	}
	parent.location.href = chLink;
}

function prevPage() {
	parent.history.go(-1);
}

function MM_openBrWindow(theURL,winName,features, v_print) { //v2.0
  var f;
  f = window.open(theURL,winName,features);
  if (v_print)
  	f.print();
}