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();

}