var valid = "";

var chkbrowser_msg = "本線上服務功能不支援您現在所使用的瀏覽器，請改用Microsoft Internet Explorer 5.5 以上版本。\r\n";
							

function checkbrowser() {

	valid = getCookie("BROWSER_VALID");
	
	if(valid == null) {
		if(navigator.appName.indexOf("Microsoft Internet Explorer") != -1) {
		
			var idx1 = navigator.appVersion.indexOf("MSIE") + "MSIE".length;
			var idx2 = navigator.appVersion.indexOf(";", idx1+1);
			var version = parseFloat(navigator.appVersion.substring(idx1+1, idx2));
			if (version < 5.5) {
				alert(chkbrowser_msg);
				setCookieEx("BROWSER_VALID", "N", false, "/uniairec", false, false);
				document.location.href = '/uniairec/index1.aspx';
			}
			else {
				setCookieEx("BROWSER_VALID", "Y", false, "/uniairec", false, false);
			}
		}
		else {
			alert(chkbrowser_msg);
			setCookieEx("BROWSER_VALID", "N", false, "/uniairec", false, false);
			document.location.href = '/uniairec/index1.aspx';
		}
	}
	else if(valid == "N") {
			alert(chkbrowser_msg);
			if(document.location.href.indexOf("/uniairec/index1.aspx") == -1) {
				document.location.href = '/uniairec/index1.aspx';
			}
	}

}

function setCookieEx(name, value, expires, path, domain, secure)
{
    document.cookie = name + "=" + escape(value) +
        ((expires) ? "; expires=" + expires.toGMTString() : "") +
        ((path) ? "; path=" + path : "") +
        ((domain) ? "; domain=" + domain : "") +
        ((secure) ? "; secure" : "");
}

function getCookie(name)
{
    var dc = document.cookie;
    var prefix = name + "=";
    var begin = dc.indexOf("; " + prefix);
    if (begin == -1)
    {
        begin = dc.indexOf(prefix);
        if (begin != 0) return null;
    }
    else
    {
        begin += 2;
    }
    var end = document.cookie.indexOf(";", begin);
    if (end == -1)
    {
        end = dc.length;
    }
    return unescape(dc.substring(begin + prefix.length, end));
}


function deleteCookie(name, path, domain)
{
    if (getCookie(name))
    {
        document.cookie = name + "=" + 
            ((path) ? "; path=" + path : "") +
            ((domain) ? "; domain=" + domain : "") +
            "; expires=Thu, 01-Jan-70 00:00:01 GMT";
    }
}

//alert(navigator.appName);
//alert(navigator.appVersion);

checkbrowser();