function okno(nazev,w,h)	{	//otevri okno o velikost w,h
	var w=window.open("foto.php?obr="+nazev,"_blank","width="+w+",height="+h+",menubar=yes");
	if (w) {
		w.focus();
		return true;
	}
	else return false;
}

function zobrazskryj(idecko) {					//Radit dle .. automaticky znovu nacte tuto stranu s novym razenim
	el=document.getElementById(idecko).style;
	el.display=(el.display == 'block')?'none':'block'; 
}

function skryj(idecko) {					//Radit dle .. automaticky znovu nacte tuto stranu s novym razenim
	el=document.getElementById(idecko).style;
	el.display='none'; 
}

function setCheckedValue(radioObj, newValue) {
	if(!radioObj)
		return;
	var radioLength = radioObj.length;
	if(radioLength == undefined) {
		radioObj.checked = (radioObj.value == newValue.toString());
		return;
	}
	for(var i = 0; i < radioLength; i++) {
		radioObj[i].checked = false;
		if(radioObj[i].value == newValue.toString()) {
			radioObj[i].checked = true;
		}
	}
}

function getCheckedValue(radioObj) {
	if(!radioObj)
		return;	
	var radioLength = radioObj.length;
	if(radioLength == undefined) {
		radioObj.checked = (radioObj.value == newValue.toString());
		return;
	}
	for(var i = 0; i < radioLength; i++) {
		if (radioObj[i].checked) return radioObj[i].value;
	} 
}

function zaskrt(n) {						//zobrazeni dobirky prodle zaskrtnuti hotovosti
//	n=document.forms['form1'].elements['doprava'].value;
//	n=getCheckedValue(document.forms['form1'].elements['doprava']);
	id1=document.getElementById('dobirka').style;
	id2=document.getElementById('hotovost').style;
	if (n==2) { 
		id1.display='none'; 
		id2.display='block'; 
		setCheckedValue(document.forms['form1'].elements['platba'], '3');
	}
	else  { 
		id2.display='none'; 
		id1.display='block';  
		setCheckedValue(document.forms['form1'].elements['platba'], '1');
	}
}