var bookmarkurl = "http://www.100porcentotuning.com"
	var bookmarktitle = document.title

	function addfav(){
		if (document.all)
		window.external.AddFavorite(bookmarkurl,bookmarktitle)
}

function MM_openBrWindow(theURL,winName,features) { //v2.0
  window.open(theURL,winName,features);
}

function EW_openWindow(theURL, winName, popW, popH)
{
	if (document.all || document.layers)
	{
		w = screen.availWidth;
   		h = screen.availHeight;
	}
	
	var leftPos = (w-popW)/2;
	var topPos = (h-popH)/2;

//toolbar=yes,location=yes,status=yes,menubar=yes,scrollbars=yes,resizable=yes,width=420,height=400
	window.open(theURL, winName, 'scrollbars=yes, width=' + popW + ',height=' + popH + ',top=' + topPos + ',left=' + leftPos);
}