function stredy(y)
{
sh=screen.height;
fy=(sh-y)/2;
if (fy<50) return 0;
return fy;
}


function stredx(x)
{
sw=screen.width;
fx=(sw-x)/2;
return fx;
}


function ukazobraz(name,x,y,nazev)
{
sb="no";
aw=screen.width;
tx=x;
if (x>(aw-2)) {tx=aw-8;sb="yes"}
ah=screen.availHeight;
ty=(y+15);
if ((y+100)>ah) {ty=ah-50;sb="yes";if (nazev=='Mapa') {tx=tx+17}}
myMsg=open("", "newwin","resizable=yes, scrollbars="+sb+", width="+tx+",height="+ty+", top="+stredy(y)+", left="+stredx(x)+"");
myMsg.document.write("<HTML><HEAD><TITLE>"+nazev+"<\/TITLE><link rel=\"stylesheet\" type=\"text\/css\" href=\"css\/style.css\"><meta http-equiv=\"Content-Type\" content=\"text\/html\; charset=windows-1250\"><\/HEAD>");
myMsg.document.write("<BODY BGCOLOR=\"#E0EFF0\" topmargin=0 leftmargin=0><img src=\""+name+"\" width="+x+" height="+y+" alt=\""+nazev+"\"><center><a href=\"Javascript:top.close()\">[Zavøi okno]<\/a><\/center><\/BODY><\/HTML>");
}

function swapImage(imgName,newImg)
{
  if ((navigator.appName == 'Netscape' && parseFloat(navigator.appVersion) >= 3) || (parseFloat(navigator.appVersion) >= 4))
{           
      eval('document.' + imgName + '.src = "' + newImg + '"');
        }
}

function MM_preloadImages() { //v3.0
  var d=document; if(d.images){ if(!d.MM_p) d.MM_p=new Array();
    var i,j=d.MM_p.length,a=MM_preloadImages.arguments; for(i=0; i<a.length; i++)
    if (a[i].indexOf("#")!=0){ d.MM_p[j]=new Image; d.MM_p[j++].src=a[i];}}
}

