function insertAtCursor(myField, myValue, smile) {
  	
  	var Value = "";
  	
  	// Zvirazneni
  	if(myValue == "smile") {
  		Value = '*'+smile+'*';
	}
	else if (myValue == "html") {
	  Value = '['+smile+'] [/'+smile+']';
  	}
  	else if (myValue == 'url') {
	  Value = '[url=] [/url]';
  	}
  	else if (myValue == 'img') {
	  Value = '[img=]';
  	}
  	else if (myValue == 'img2') {
	  Value = '[img= alt= w= h=]';
  	}
  	else if (myValue == 'b') {
	  Value = '[b] [/b]';
  	}
  	else if (myValue == 'i') {
	  Value = '[i] [/i]';
  	}
  	else if (myValue == 'u') {
	  Value = '[u] [/u]';
  	}
  	
   	
	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;
    }
    
}