function MM_swapImgRestore() { //v3.0
  var i,x,a=document.MM_sr; for(i=0;a&&i<a.length&&(x=a[i])&&x.oSrc;i++) x.src=x.oSrc;
}
function MM_preloadImages() { //v3.0
  var d=document; if(d.images){ if(!d.MM_p) d.MM_p=new Array();
    var i,j=d.MM_p.length,a=MM_preloadImages.arguments; for(i=0; i<a.length; i++)
    if (a[i].indexOf("#")!=0){ d.MM_p[j]=new Image; d.MM_p[j++].src=a[i];}}
}

function MM_findObj(n, d) { //v4.01
  var p,i,x;  if(!d) d=document; if((p=n.indexOf("?"))>0&&parent.frames.length) {
    d=parent.frames[n.substring(p+1)].document; n=n.substring(0,p);}
  if(!(x=d[n])&&d.all) x=d.all[n]; for (i=0;!x&&i<d.forms.length;i++) x=d.forms[i][n];
  for(i=0;!x&&d.layers&&i<d.layers.length;i++) x=MM_findObj(n,d.layers[i].document);
  if(!x && d.getElementById) x=d.getElementById(n); return x;
}

function MM_swapImage() { //v3.0
  var i,j=0,x,a=MM_swapImage.arguments; document.MM_sr=new Array; for(i=0;i<(a.length-2);i+=3)
   if ((x=MM_findObj(a[i]))!=null){document.MM_sr[j++]=x; if(!x.oSrc) x.oSrc=x.src; x.src=a[i+2];}
}
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.getElementsByTagName("a");
    for (var i=0; i < pageLinks.length; i++) {
        if(pageLinks[i].childNodes[0] && pageLinks[i].childNodes[0].src) {
            if((pageLinks[i].childNodes[0].src.indexOf('download.skype.com\/share\/skypebuttons') != -1 || pageLinks[i].childNodes[0].src.indexOf('mystatus.skype.com') != -1) && (typeof(pageLinks[i].onclick) == "undefined" || pageLinks[i].onclick == null)) {
                pageLinks[i].onclick = function sChk() { return skypeCheck(); }
            }
        }
    }
}

loadDetection();