function zkontroluj(formular)
{

if (formular.jmeno.value=="")
{
alert("Nezadali jste jméno.");
formular.jmeno.focus();
return false;
}

else if (formular.text.value=="")
{
alert("Nebyl zadán text komentáře.");
formular.text.focus();
return false;
}

else
return true;
}





  function insertAtCursor(myField, myValue, smile) {
  	
  	var Value = "";
  	
  	// Zvirazneni
  	if(myValue == "smile") {
  		Value = '*'+smile+'*';
	}
	else if(myValue == "nick") {
		Value = ''+smile+':';
	}
  	else if (myValue == "b") {
		Value = '[b] [/b]';
  	}
  	else if (myValue == 'u') {
		Value = '[u] [/u]';
  	}
  	else if (myValue == 'i') {
		Value = '[i] [/i]';
  	}
  	// Barvy
  	else if (myValue == 'black') {
		Value = '[color=#000000] [/color]';
  	}
  	else if (myValue == 'red') {
		Value = '[color=#ff0000] [/color]';
  	}
  	else if (myValue == 'green') {
		Value = '[color=#00cc05] [/color]';
  	}
  	else if (myValue == 'blue') {
		Value = '[color=#0000cc] [/color]';
  	}
  	else if (myValue == 'gray') {
		Value = 'color=#c0c0c0] [/color]';
  	}
  	else if (myValue == 'orange') {
		Value = '[color=#fe9901] [/color]';
  	}
  	else if (myValue == 'white') {
		Value = '[color=#ffffff] [/color]';
  	}
  	// Zarovani
  	else if (myValue == 'left') {
		Value = '[left] [/left]';
  	}
  	else if (myValue == 'center') {
		Value = '[center] [/center]';
  	}
  	else if (myValue == 'right') {
		Value = '[right] [/right]';
  	}
  	else if (myValue == 'justify') {
		Value = '[justify] [/justify]';
  	}
  	// Odkaz
  	else if (myValue == 'url') {
		Value = '[url=http://](popis odkazu)[/url]';
  	}

  	
	if (document.selection) {
		myField.focus();
		sel = document.selection.createRange();
		sel.text = Value;
	}
	else if (myField.selectionStart || myField.selectionStart == '0') {
		var startPos = myField.selectionStart;
		var endPos = myField.selectionEnd;
		myField.value = myField.value.substring(0, startPos)
		+ Value
		+ myField.value.substring(endPos, myField.value.length);
	} else {
		myField.value += Value;
	}
  }