function isBubbleFootInstalled() {
	    if((navigator.userAgent.indexOf('Safari')!=-1) || (navigator.userAgent.indexOf('Opera')!=-1)) return false;	   
	    if( !((navigator.userAgent.indexOf('Win')!= -1) && (navigator.userAgent.indexOf('MSIE')!=-1) && (parseInt(navigator.appVersion) >= 4)) ) {
	    		if  (	typeof(navigator.mimeTypes["application/x-Bubble Foot"]) == "object" 
	    		     || typeof(navigator.mimeTypes["application/x-bubblefoot-bfo"]) == "object" 
	    		     || typeof(navigator.mimeTypes["application/x-bubblefoot"]) == "object"
	    		    ) {
	    			return true;
	    		} else {
	    			return false;
	    		}	        
	    } else {
	    	  try{
					var axo = new ActiveXObject("Livesticker.Infos");
					axo.productName = "Bubble Foot";
					var sVersion = axo.version; 

			    return (sVersion != "") ;
  				}catch (e){
   						return false;
   				}
	    }
    return false;
}