function image_open(file) {
var str_buffer = new String (
"<html>\n"+
"<head>\n"+
"<title>Kliknutím zavřete okno</title>\n"+
"<link href=\"style.css\" rel=\"stylesheet\" type=\"text/css\">\n"+
"</head>\n"+
"<body bgcolor=\"#000\" leftmargin=\"0\" topmargin=\"0\" marginwidth=\"0\" marginheight=\"0\" style=\"margin-bottom: 0px; margin-left: 0px; margin-right: 0px; margin-top: 0px; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px;\">\n"+
"<a href=\"javascript:window.close();\"><img name=\"obr\" src=\"" + file + "\"  alt=\"Kliknutím zavřete okno\" border=0 ></a>\n"+ 
        "</body>\n</html>");
var okno = window.open("","okno1",'width=595,height=596,left=20,top=20,location=no,toolbar=no,directories=no,status=no,scrollbars=yes,copyhistory=no');
okno.opener = self;
okno.focus();

var okno_doc = okno.document;
okno_doc.write (str_buffer);
okno_doc.close();
}

function image_open_refer(file) {
var str_buffer = new String (
"<html>\n"+
"<head>\n"+
"<title>Kliknutím zavřete okno</title>\n"+
"<link href=\"style.css\" rel=\"stylesheet\" type=\"text/css\">\n"+
"</head>\n"+
"<body onload=\"velikost();\" bgcolor=\"#000\" leftmargin=\"0\" topmargin=\"0\" marginwidth=\"0\" marginheight=\"0\" style=\"margin-bottom: 0px; margin-left: 0px; margin-right: 0px; margin-top: 0px; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px;\">\n"+
"<a href=\"javascript:window.close();\"><img name=\"obr\" src=\"" + file + "\"  alt=\"Kliknutím zavřete okno\" border=0 ></a>\n"+ 
        "</body>\n</html>");
var okno = window.open("","okno1",'width=300,height=200,left=20,top=20,location=no,toolbar=no,directories=no,status=no,scrollbars=yes,copyhistory=no');
okno.opener = self;
okno.focus();

var okno_doc = okno.document;
okno_doc.write (str_buffer);
okno_doc.close();
}

function image_open_refer2(file) {
var str_buffer = new String (
"<html>\n"+
"<head>\n"+
"<title>Kliknutím zavřete okno</title>\n"+
"<link href=\"style.css\" rel=\"stylesheet\" type=\"text/css\">\n"+
"</head>\n"+
"<body onload=\"velikost();\" bgcolor=\"#000\" leftmargin=\"0\" topmargin=\"0\" marginwidth=\"0\" marginheight=\"0\" style=\"margin-bottom: 0px; margin-left: 0px; margin-right: 0px; margin-top: 0px; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px;\">\n"+
"<a href=\"javascript:window.close();\"><img name=\"obr\" src=\"" + file + "\"  alt=\"Kliknutím zavřete okno\" border=0 ></a>\n"+ 
        "</body>\n</html>");
var okno = window.open("","okno1",'width=200,height=300,left=20,top=20,location=no,toolbar=no,directories=no,status=no,scrollbars=yes,copyhistory=no');
okno.opener = self;
okno.focus();

var okno_doc = okno.document;
okno_doc.write (str_buffer);
okno_doc.close();
}


function displayWindow(theURL,winName,width,height,features) { 
    var window_width = width;
    var window_height = height;
    var newfeatures= features;
    var window_top = (screen.height-window_height)/2;
    var window_left = (screen.width-window_width)/2;
    newWindow=window.open('' + theURL + '','' + winName + '','width=' + window_width + ',height=' + window_height + ',top=' + window_top + ',left=' + window_left + ',features=' + newfeatures + '');
    newWindow.focus();}


function zobrazSkryj(idecko){
el=document.getElementById(idecko).style;
el.display=(el.display == 'block')?'none':'block';
}

function zkontroluj(formular)
{

if (formular.jmeno.value=="")
{
alert("Jméno není vyplněno!");
formular.jmeno.focus();
return false;
}
else if (formular.mail.value=="")
{
alert("Váš e-mail musíte vyplnit!");
formular.mail.focus();
return false;
}
else if (formular.telefon.value=="")
{
alert("Váš telefon musíte vyplnit!");
formular.telefon.focus();
return false;
}
else if (formular.text.value=="")
{
alert("Text musíte vyplnit!");
formular.text.focus();
return false;
}
else
return true;
}


function check(formular)
{

if (formular.operace.value=="")
{
alert("Operace není vybrána!");
formular.operace.focus();
return false;
}
else if (formular.druh.value=="")
{
alert("Druh musíte vyplnit!");
formular.druh.focus();
return false;
}
else if (formular.cena.value=="")
{
alert("Cenu musíte vyplnit!");
formular.cena.focus();
return false;
}
else if (formular.kraj.value=="")
{
alert("Kraj musíte vyplnit!");
formular.kraj.focus();
return false;
}
else if (formular.obec.value=="")
{
alert("Obec musíte vyplnit!");
formular.obec.focus();
return false;
}
else if (formular.jmeno.value=="")
{
alert("Jméno musíte vyplnit!");
formular.jmeno.focus();
return false;
}
else if (formular.prijmeni.value=="")
{
alert("Příjmení musíte vyplnit!");
formular.prijmeni.focus();
return false;
}
else if (formular.ulice.value=="")
{
alert("Ulici musíte vyplnit!");
formular.ulice.focus();
return false;
}
else if (formular.obec2.value=="")
{
alert("Obec musíte vyplnit!");
formular.obec2.focus();
return false;
}
else if (formular.psc.value=="")
{
alert("PSČ musíte vyplnit!");
formular.psc.focus();
return false;
}
else if (formular.email.value=="")
{
alert("E-mail musíte vyplnit!");
formular.email.focus();
return false;
}
else
return true;
}
