function zs(idecko){
  el=document.getElementById(idecko).style;
  el.display=(el.display == 'block')?'none':'block';
}

function sz(idecko){
  el=document.getElementById(idecko).style;
  el.display=(el.display == 'none')?'block':'none';
}

function externalLinks() {
 if (!document.getElementsByTagName) return;
 var anchors = document.getElementsByTagName("a");
 for (var i=0; i<anchors.length; i++) {
   var anchor = anchors[i];
   if (anchor.getAttribute("href") &&
       anchor.getAttribute("rel") == "external")
     anchor.target = "_blank";
 }
}

/*

  Zajisteni zustatku dat v kosikovem formulari pomoci cookies

*/

function setcookie(name,value,expire){
    datum=new Date();
    datum.setTime(datum.getTime()+expire);
    $escape = new Array ('%u00C1','%u00CD','%u0164','%u00E1','%u00ED','%u0165','%u010C','%u0147','%u00DA','%u010D','%u0148','%u00FA','%u010E','%u00D3','%u016E','%u010F','%u00F3','%u016F','%u00C9','%u0158','%u00DD','%u00E9','%u0159','%u00FD','%u011A','%u0160','%u017D','%u011B','%u0161','%u017E');
    $unescape = new Array ('�','Í','Ť','á','í','ť,','Č','Ň','Ú','č','�','ú','Ď','Ó','Ů','ď','ó','ů','É','�','Ý','é','ř','ý','Ě','Š','Ž','ě','š','ž');
    for($i=0;$i<$escape.length;$i++){
       re = eval("/"+$unescape[$i]+"/g");
       value=value.replace(re,$escape[$i]);
   }
   document.cookie=name+"="+value+"; expires="+datum.toGMTString();;
}
function getcookie(Name) {   
   var search = Name + "="; 
   if (document.cookie.length > 0) { 
      offset=document.cookie.indexOf(search);    
      if(offset!=-1) { 
         offset += search.length;
         end = document.cookie.indexOf(";", offset);          
         if (end == -1) end = document.cookie.length;
         return unescape(document.cookie.substring(offset, end));      
      }    
   }
}

function setunicookie(subnazev,hodnota){
	retezec='';
	obsahuje='ne';
	nazev = 'uni_cart';
	if(getcookie(nazev)=='' || typeof(getcookie(nazev))=='undefined'){
	   retezec+=subnazev+"="+hodnota+"|";
	}else{
	   pole1=getcookie(nazev).split("|");
	   for(x=0;x<(pole1.length-1);x++){
		  pole2=pole1[x].split("=");
		  if(pole2[0]==subnazev){
			 retezec+=pole2[0]+"="+hodnota+"|";
			 obsahuje='ano';
		  }else{
			 retezec+=pole2[0]+"="+pole2[1]+"|";
		  }
	   }
	   if(obsahuje=='ne'){
		  retezec+=subnazev+"="+hodnota+"|";
	   }
	}
	setcookie(nazev,'',-50);
	setcookie(nazev,retezec,1000000000);

}