//insert
function insertAtCaret(areaId,text) { var txtarea = document.getElementById(areaId); var scrollPos = txtarea.scrollTop; var strPos = 0; var br = ((txtarea.selectionStart || txtarea.selectionStart == '0') ? "ff" : (document.selection ? "ie" : false ) ); if (br == "ie") { txtarea.focus(); var range = document.selection.createRange(); range.moveStart ('character', -txtarea.value.length); strPos = range.text.length; } else if (br == "ff") strPos = txtarea.selectionStart; var front = (txtarea.value).substring(0,strPos); var back = (txtarea.value).substring(strPos,txtarea.value.length); txtarea.value=front+text+back; strPos = strPos + text.length; if (br == "ie") { txtarea.focus(); var range = document.selection.createRange(); range.moveStart ('character', -txtarea.value.length); range.moveStart ('character', strPos); range.moveEnd ('character', 0); range.select(); } else if (br == "ff") { txtarea.selectionStart = strPos; txtarea.selectionEnd = strPos; txtarea.focus(); } txtarea.scrollTop = scrollPos; }  

//disable
function dis(hodnota,vis)
{ 
	document.getElementById(hodnota).disabled=vis;

	if (vis==true) {
		farba = red;
	}else{
		farba = green;
	}
};

function disvis(hodnota,tlacitko) {

if(document.getElementById(tlacitko).checked)
{
document.getElementById(hodnota).disabled=false;
}

else
{
document.getElementById(hodnota).disabled=true;
}
}

function visdis(hodnota,tlacitko) {

if(document.getElementById(tlacitko).checked)
{
document.getElementById(hodnota).disabled=true;
}

else
{
document.getElementById(hodnota).disabled=false;
}
}

//textarea
function textarea(limitField, limitCount, limitNum) {
	if (limitField.value.length > limitNum) {
		limitField.value = limitField.value.substring(0, limitNum);
	} else {
		limitCount.value = limitNum - limitField.value.length;
	}
}

//int
function int(evt)
{
  var charCode = (evt.which) ? evt.which : event.keyCode
  if (charCode > 31 && (charCode < 48 || charCode > 57))
    return false;

  return true;
}