function MM_jumpMenu(targ,selObj,restore){ //v3.0
  eval(targ+".location='"+selObj.options[selObj.selectedIndex].value+"'");
  //if (restore) selObj.selectedIndex=0;
}
var newwindow = '';

function potahy() {
	if (!newwindow.closed && newwindow.location) {
	}
	else {
		var width = 660
		var height = 830
		var left = (screen.availWidth - width) / 2
		var top = (screen.availHeight - height) / 2
		if(left < 0) left = 0
		if(top < 0) top = 0
		newwindow=window.open('vzornik_potahy.html','_blank', 'width=' + width + ',height=' + height + ',top=' + top + ',left=' + left + ',toolbar=0,location=0,directories=0,status=0,menubar=0,scrollbars=1,resizable=1');
	}
	newwindow.opener = window
	if (window.focus) {newwindow.focus()}
}