function pop(plik,w,h) {
 aw=800;
 ah=600;
 okno = null;
 if(window.screen) {
  aw = screen.availWidth;
  ah = screen.availHeight;
 }
 dane="width="+w+",height="+h+",left="+(aw-w)/2+",top="+(ah-h)/2+",toolbar=no,location=no,directories=no,"+"status=no,menubar=no,scrollbars=yes,resizable=no";
 okno=window.open(plik,'pop',dane);
}

function $(v) { return(document.getElementById(v)); }
function $S(v) { return($(v).style); }

function $T(v,i) { return((i?$(i):document).getElementsByTagName(v)); }
function browser(v) { return(Math.max(navigator.userAgent.toLowerCase().indexOf(v),0)); }
function clearDefault(el) { if(el.defaultValue==el.value) el.value=""; }
function cookieGrab(f) { var c=document.cookie.split(';'); f=f+"="; for(var i in c) { var v=trim(c[i]); if(v.indexOf(f)==0) { return(v.substr(f.length,v.length)); } } }
function cookieStab(f,v) { document.cookie=f+'='+v+'; path=/'; }
function inArray(v,r) { for(var i in r) if(r[i]==v) return(1); } 
function inArrayRM(v,r) { var z=new Array(),j=0; for(var i in r) if(r[i]!=v) { z[j++]=r[i]; } return(z); }
function input(i,v) { if(i.defaultValue==i.value) i.value=v; }
function isset(v) { return((typeof(v)=='undefined' || v=='undefined' || v.length==0)?0:1); }
function mkNav(t) { var v=$('navMe'); $S(v.firstChild.className).display='none'; $S(t.className).display='block'; v.id=''; t.parentNode.id='navMe'; }
function mkStyle(v) { var b=zero(document.getElementById('lyrics_content').firstChild.style.fontSize)+zero(v); document.getElementById('lyrics_content').firstChild.style.fontSize=b+'px'; cookieStab('fontSize',b-15); } 
function trim(v) { return(v.replace(/(?:(?:^|\n)\s+|\s+(?:$|\n))/g,"")); }
function upDown(v,s) { var b=!isNaN(s)?s:($S('pm'+v).display=='none'?1:0),c=cookieGrab('side'); $T('span','s'+v)[0].innerHTML=b?'–':'+'; $S('pm'+v).display=b?'block':'none'; if(!s) { var r={},z=''; c=(c+'*'+v+':'+b).split('*'); for(var i in c) if(isset(c[i])) { i=c[i].split(':'); r[i[0]]=i[1]; } for(var i in r) z+=i+':'+r[i]+'*'; cookieStab('side',z.substr(0,z.length-1)); } }
function XY(e,v) { var z=browser('msie')?Array(event.clientX+document.body.scrollLeft,event.clientY+document.body.scrollTop):Array(e.pageX,e.pageY); return(z[zero(v)]); }
function XYwin(v) { var z=browser('msie')?Array(document.body.clientHeight,document.body.clientWidth):Array(window.innerHeight,window.innerWidth); return(isset(v)?z[v]:z); }
function zero(v) { v=parseInt(v); return(!isNaN(v)?v:0); }