function checkBrowser()
{
    this.ver=navigator.appVersion;
    this.dom=document.getElementById?1:0;
    this.ie6=(this.ver.indexOf("MSIE 6")>-1 && this.dom)?1:0;
    this.ie5=(this.ver.indexOf("MSIE 5")>-1 && this.dom)?1:0;
    this.ns6=(this.dom && parseInt(this.ver)>= 5)?1:0;
    this.ns4=(document.layers && !this.dom)?1:0;
    this.opr=(navigator.userAgent.toLowerCase().indexOf("opera")!=-1)?1:0;

    return this
}

function vlozRetezec(id){ 
    if(id=='') alert('Na tento komentář nelze reagovat.');
    else
    {
        var isForm=document.forms["vlozit-komentar"];
        if (isForm) {
            var input=document.forms["vlozit-komentar"].elements["reakce"];
            input.value=id; 
        }
        else alert('Přístup zamítnut');
    }
}

function pasteSel() {
    if(document.getSelection) selection=document.getSelection();
    else if(document.selection) selection=document.selection.createRange().text;
    else if(window.getSelection) selection=window.getSelection;
    else selection='';
}
function skoc(url,amp) {
  if (document.forms["razeni"].razeni.options[document.forms["razeni"].razeni.selectedIndex].value == "cena" ) {
    window.location=(url+amp+"razeni=cena");
  }
  if (document.forms["razeni"].razeni.options[document.forms["razeni"].razeni.selectedIndex].value == "vyrobce" ) {
    window.location=(url+amp+"razeni=vyrobce");
  }
  if (document.forms["razeni"].razeni.options[document.forms["razeni"].razeni.selectedIndex].value == "nejprodavanejsi" ) {
    window.location=url;
  }
}