/*******************************************************************************
DHTML knihovna
==============
Version:	1.1 (9.6.2004)
*******************************************************************************/

var jsDOM0 = (document.all);
var jsDOM1 = (document.getElementById);
var jsDOM = jsDOM0 || jsDOM1;
var jsDebug = 0;

function getObj (name) {
    if (typeof name == "object") return name;
    if (jsDOM1) return document.getElementById(name);
    if (jsDOM0) return eval('document.all.'+name);
    else return null;
    }

function objSetStyle (obj, prop, val) {
    var o = objGet(obj);
    if (o && o.style) {
        eval ('o.style.'+prop+'="'+val+'"');
        return true;
    }
    else return false;
}

function objShow (obj, on) {
    return objSetStyle(obj, 'visibility', (on) ? 'visible':'hidden');
}

function objDisplay (obj, on, type) {
    if (on && !type) type = 'block';
    return objSetStyle(obj, 'display', (on) ? type: 'none');
}


function imagepopup(p,x,y) {
photopop = window.open('imagepopup.php?photo='+p,'photopop','top=100,left=100,resizable=0,status=0,menubar=0,toolbar=0,scrollbars=0,location=0,directories=0,width='+x+',height='+y);
photopop.focus();
}

function newwin(p,x,y) {
newwinpop = window.open('index.php?Mode=4&popup='+p,'newwinpop','resizable=0,status=0,menubar=0,toolbar=0,scrollbars=0,location=0,directories=0,width='+x+',height='+y);
newwinpop.focus();
}

function validContactForm() {
errText = "Pro odeslání formuláře musíte vyplnit:\n\n";
errFlag = false;
	
if(getObj('firstname').value == "") {
  errFlag = true;
  errText = errText + "Jméno\n";
}

if(getObj('lastname').value == "") {
  errFlag = true;
  errText = errText + "Příjmení\n";
}

if((getObj('phone').value == "") && (getObj('email').value == "")) {
  errFlag = true;
  errText = errText + "Telefon nebo e-mail\n";
}

if (getObj('email').value != "") {
  inp=getObj('email').value;
  mail=/^.+@.+\..{2,4}$/
   if (mail.test(inp)==false) {
      window.alert("Nesprávný tvar emailové adresy!");
      return (false);
   }
}

if(errFlag) {
	alert(errText);
	return false;
} else {
	return true;
}
}

function cislo(){
  if (event.keyCode < 48 || event.keyCode > 57)
     event.returnValue= false;
  }