function winH() { 
	if (window.innerHeight) 
	  return window.innerHeight; 
	else if (document.documentElement && document.documentElement.clientHeight) 
		return document.documentElement.clientHeight; 
	else if (document.body && document.body.clientHeight) 
		return document.body.clientHeight; 
	else 
	  return null; 
};
function winW() { 
	if (window.innerWidth) return window.innerWidth; 
	else if (document.documentElement && document.documentElement.clientWidth) 
		return document.documentElement.clientWidth; 
	else if (document.body && document.body.clientWidth) 
		return document.body.clientWidth; 
	else 
	  return null; 
};
function pripojitKOnChange() {
	if (document.getElementById("aut").value == 1)
	{
		document.getElementById("user").value = 'admin';
		document.getElementById("user").style.visibility = 'hidden';
	}
	else
	{
		document.getElementById("user").value = '** přihlašovací jméno **';
		document.getElementById("user").style.visibility = 'visible';
	}
};
 function typChange()
   {
      var hodnota = document.getElementById('typeID').value;
      if (hodnota == 'blank')
      {
      	 document.getElementById('targetID').style.visibility='hidden';
				 document.getElementById('textID').style.visibility='hidden';
				 document.getElementById('fileID').style.visibility='hidden';	
			}
			else if (hodnota == 'target')
			{
			   document.getElementById('targetID').style.visibility='visible';
				 document.getElementById('textID').style.visibility='hidden';
				 document.getElementById('fileID').style.visibility='hidden';	
			}
			else if (hodnota == 'text')
			{
			   document.getElementById('targetID').style.visibility='hidden';
				 document.getElementById('textID').style.visibility='visible';
				 document.getElementById('fileID').style.visibility='hidden';	
			}
			else if (hodnota == 'file')
			{
			   document.getElementById('targetID').style.visibility='hidden';
				 document.getElementById('textID').style.visibility='hidden';
				 document.getElementById('fileID').style.visibility='visible';	
			}
			return 0;
   };