var activex = ((navigator.userAgent.indexOf('Win')  != -1) && (navigator.userAgent.indexOf('MSIE') != -1) && (parseInt(navigator.appVersion) >= 4 ));

var CantDetect = ((navigator.userAgent.indexOf('Safari')  != -1) || (navigator.userAgent.indexOf('Opera')  != -1));



function oopsPopup() {

    if((navigator.language && navigator.language.indexOf("ja") != -1) || (navigator.systemLanguage && navigator.systemLanguage.indexOf("ja") != -1) || (navigator.userLanguage && navigator.userLanguage.indexOf("ja") != -1)) {

        var URLtoOpen = "http://download.skype.com/share/skypebuttons/oops/oops_ja.html";

    } else {

        var URLtoOpen = "http://download.skype.com/share/skypebuttons/oops/oops.html";

    }

	var windowName = "oops";

	var popW = 540, popH = 305;

	var scrollB = 'no';

	w = screen.availWidth;

	h = screen.availHeight;

	var leftPos = (w-popW)/2, topPos = (h-popH)/2;

	oopswindow = window.open(URLtoOpen, windowName,'width=' + popW + ',height=' + popH + ',scrollbars=' + scrollB + ',screenx=' +leftPos +',screeny=' +topPos +',top=' +topPos +',left=' +leftPos);

	return false;

}



if(typeof(detected) == "undefined" && activex) {

    document.write(

        ['<script language="VBscript">',

        'Function isSkypeInstalled()',

        'on error resume next',

        'Set oSkype = CreateObject("Skype.Detection")',

        'isSkypeInstalled = IsObject(oSkype)',

        'Set oSkype = nothing',

        'End Function',

        '</script>'].join("\n")

    );

}



function skypeCheck() {

    if(CantDetect) {

        return true;

    } else if(!activex) {

        var skypeMime = navigator.mimeTypes["application/x-skype"];

        detected = true;

        if(typeof(skypeMime) == "object") {

            return true;

        } else {

            return oopsPopup();

        }

    } else {

        if(isSkypeInstalled()) {

            detected = true;

            return true;

        }

    }

    

    detected = true;

    return oopsPopup();

}



function loadDetection() {

    if(document.getElementById && document.getElementsByTagName) {

        if (window.addEventListener) window.addEventListener('load', addDetection, false);

        else if (window.attachEvent) window.attachEvent('onload', addDetection);

    }

}



function addDetection() {

    var pageLinks = document.getElementById("skypeme");

	pageLinks.onclick = function sChk() {

		return skypeCheck();

	}

}



loadDetection();