function winOpen(url,w,h, winname,scroll) {
	if (scroll!='no')scroll='yes';
	window.open(url, winname, "toolbar=no,location=no,scrollbars="+scroll+",directories=no,status=no,menubar=no,resizable=yes,width="+w+",height="+h+",left=100,top=100");
}
//Mění parametr "action" formuláře a odesílá na něj form
function SendForm(cilFormu){
	document.form_vypis.action=cilFormu;
	document.form_vypis.submit();
}

function redir(url){
	window.location.href=url
}

function replace(str, original, replacement) {
	var result;
	result = "";
	while(str.indexOf(original) != -1) {
		if (str.indexOf(original) > 0)
			result = result + str.substring(0, str.indexOf(original)) + replacement;
		else
			result = result + replacement;
			str = str.substring(str.indexOf(original) + original.length, str.length);
	}
	return result + str;
}

function getRadioValue(radio) {

	if (radio == null)
		return null;
	
	try {
		if (radio.length > 0) {
			for (index=0; index < radio.length; index++) { 
				if (radio[index].checked) 
					return radio[index].value; 
			}
		}
		else {
			return radio.value;
		}
	}
	catch(e) { return null; }
}