function share(url, w, h, s) {
	var D=w,A=h,C=screen.height,B=screen.width,H=Math.round((B/2)-(D/2)),G=0,F=document,E;
	 
	if(C>A){
		G=Math.round((C/2)-(A/2))
	}
	
	window.open(url,'','left='+H+',top='+G+',width='+D+',height='+A+',personalbar=0,toolbar=0,scrollbars='+s+',resizable=1'); 
}