function doLoad(numimg,Width,Height) {
	Width+=20;
	Height+=20;
	if (screen.availWidth){
		b=(screen.availHeight - Height < 0) ? 0:(screen.availHeight - Height)/2-50;
		a=(screen.availWidth -Width < 0) ? 0:(screen.availWidth - Width)/2-50;
	}else{
		a=0;
		b=0;
	}
  	window.open(numimg,'','menubar=no,scrollbars=no,resizable=no,width='+Width+',height='+Height+',top='+b+',left='+a);
	return false ;
}