function CheckDelMsg()
{
	if(!confirm("Opravdu chcete smazat tuto fotografii?")) return false;
	return true;
}

function checkFieldsPhoto(frm)
{
  for (i=1; i < arguments.length; i++) {
      if (frm[arguments[i]].value == '') {
          frm[arguments[i]].focus();
          document.getElementById("uploadinfo").style.visibility = "hidden";
          alert('Vyplňte všechny položky označené hvězdičkou.');
          return false;
      }
  }
  return true;
}

function checkFields(frm)
{
  for (i=1; i < arguments.length; i++) {
      if (frm[arguments[i]].value == '') {
          frm[arguments[i]].focus();
          alert('Vyplňte všechny položky označené hvězdičkou.');
          return false;
      }
  }
  return true;
}


function setMaxLength()
{
	var x = document.getElementsByTagName('textarea');
	var counter = document.createElement('div');
	counter.className = 'counter';
	for (var i=0;i<x.length;i++) {
		if (x[i].getAttribute('maxlength')) {
			var counterClone = counter.cloneNode(true);
			counterClone.relatedElement = x[i];
			counterClone.innerHTML = '<span>0</span>/'+x[i].getAttribute('maxlength');
			x[i].parentNode.insertBefore(counterClone,x[i].nextSibling);
			x[i].relatedElement = counterClone.getElementsByTagName('span')[0];
			x[i].onkeyup = x[i].onchange = checkMaxLength;
			x[i].onkeyup();
		}
	}
}


function checkMaxLength()
{
	var maxLength = this.getAttribute('maxlength');
	var currentLength = this.value.length;
	if (currentLength > maxLength) {
    //this.value = this.value.substring(0,maxLength);
		this.relatedElement.className = 'toomuch';
		this.relatedElement.firstChild.nodeValue = "POZOR - překročena maximální délka: " + currentLength;
  }
	else {
		this.relatedElement.className = '';
	  this.relatedElement.firstChild.nodeValue = currentLength;
  }
 	// not innerHTML
}


function showUploadInfo()
{
 document.getElementById("uploadinfo").style.visibility = "visible";
}

function showLoginInfo()
{
 document.getElementById("logininfo").style.visibility = "visible";
}

function showHide(name)
{
  var text=name+'text';

  if(document.getElementById(name).style.display == 'block') {
    document.getElementById(text).innerHTML = 'více informací&nbsp;&raquo;';
    document.getElementById(name).style.display = 'none';
  } else {
    document.getElementById(text).innerHTML = '&laquo;&nbsp;skrýt informace';
    document.getElementById(name).style.display = 'block';
  }
}