function imageholderclass(){
  this.over=new Array();
  this.down=new Array();
  this.src=new Array();
  this.store=store;
  
  function store(src, down, over){
    var AL=this.src.length;
    this.src[AL]=new Image(); this.src[AL].src=src;
    this.over[AL]=new Image(); this.over[AL].src=over;
    this.down[AL]=new Image(); this.down[AL].src=down;
  }
}

var ih = new imageholderclass();
var mouseisdown=0;

function preloader(t){
  for(i=0;i<t.length;i++){
    if(t[i].getAttribute('srcover')||t[i].getAttribute('srcdown')){
      
      storeimages(t[i]);
      var checker='';
      checker=(t[i].getAttribute('srcover'))?checker+'A':checker+'';
      checker=(t[i].getAttribute('srcdown'))?checker+'B':checker+'';
      
      switch(checker){
      case 'A' : mouseover(t[i]);mouseout(t[i]); break;
      case 'B' : mousedown(t[i]); mouseup2(t[i]); break;
      case 'AB' : mouseover(t[i]);mouseout(t[i]); 
                  mousedown(t[i]); mouseup(t[i]); break;
      default : return;      
      }
      
      if(t[i].src){t[i].setAttribute("oldsrc",t[i].src);}
    }
  }
}

function mouseup(t){
  var newmouseup;
  if(t.onmouseup){
    t.oldmouseup=t.onmouseup;
    newmouseup= 
      function(){mouseisdown=0;
                 this.src=this.getAttribute("srcover");
                 this.oldmouseup();}

  }
  else{
    newmouseup = 
      function(){mouseisdown=0;
                 this.src=this.getAttribute("srcover");}
  }
  t.onmouseup=newmouseup;
}

function mouseup2(t){
  var newmouseup;
  if(t.onmouseup){
    t.oldmouseup=t.onmouseup;
    newmouseup=function(){mouseisdown=0;
               this.src=this.getAttribute("oldsrc");
               this.oldmouseup();}
    }
  else{newmouseup=function(){mouseisdown=0;
                  this.src=this.getAttribute("oldsrc");}}
  t.onmouseup = newmouseup;
}

function mousedown(t){
  var newmousedown;
  if(t.onmousedown){
    t.oldmousedown=t.onmousedown;
    newmousedown=
      function(){if(mouseisdown==0)
                 {this.src=this.getAttribute("srcdown");
                  this.oldmousedown();}}
  }
  else{newmousedown=
       function(){if(mouseisdown==0){
                      this.src=this.getAttribute("srcdown");}}}
  t.onmousedown=newmousedown;
}

function mouseover(t){
  var newmouseover;
  if(t.onmouseover){
    t.oldmouseover=t.onmouseover;
    newmouseover= function(){this.src=this.getAttribute("srcover");
                             this.oldmouseover();}
  }
  else{newmouseover=function(){this.src=this.getAttribute("srcover");}}
  t.onmouseover=newmouseover;
}

function mouseout(t){
  var newmouseout;
  if(t.onmouseout){
    t.oldmouseout=t.onmouseout;
    newmouseout = 
   function(){this.src=this.getAttribute("oldsrc");this.oldmouseout();}
  }
  else{newmouseout=function(){this.src=this.getAttribute("oldsrc");}}
  t.onmouseout=newmouseout;
}

function storeimages(t){
  var s=(t.getAttribute('src'))?t.getAttribute('src'):'';
  var d=(t.getAttribute('srcdown'))?t.getAttribute('srcdown'):'';
  var o=(t.getAttribute('srcover'))?t.getAttribute('srcover'):'';
  ih.store(s,d,o);
}

function preloadimgsrc(){
  if(!document.getElementById) return;
  var it=document.getElementsByTagName('IMG');
  var it2=document.getElementsByTagName('INPUT');
  preloader(it);
  preloader(it2);
}

if(window.addEventListener)
  {window.addEventListener("load", preloadimgsrc, false);} 
else{
  if(window.attachEvent){window.attachEvent("onload", preloadimgsrc);}
  else{if(document.getElementById){window.onload=preloadimgsrc;}}
}

function vercheck(){
if(!document.getElementById || !document.createElement)
    return(false);
var b=navigator.userAgent.toLowerCase();
if(b.indexOf("msie 5")>0 && b.indexOf("opera")==-1)
    return(false);
return(true);
}

function rounded(selector,bk,color,size){
var i;
var v=getElementsBySelector(selector);
var l=v.length;
for(i=0;i<l;i++){
    AddTop(v[i],bk,color,size);
    AddBottom(v[i],bk,color,size);
    }
}

function roundedtop(selector,bk,color,size){
var i;
var v=getElementsBySelector(selector);
for(i=0;i<v.length;i++)
    AddTop(v[i],bk,color,size);
}

function roundedbottom(selector,bk,color,size){
var i;
var v=getElementsBySelector(selector);
for(i=0;i<v.length;i++)
    AddBottom(v[i],bk,color,size);
}

function AddTop(el,bk,color,size){
var i;
var d=document.createElement("b");
var cn="r";
var lim=4;
if(size && size=="small"){ cn="rs"; lim=2}
d.className="rtop";
d.style.backgroundColor=bk;
for(i=1;i<=lim;i++){
    var x=document.createElement("b");
    x.className=cn + i;
    x.style.backgroundColor=color;
    d.appendChild(x);
    }
el.insertBefore(d,el.firstChild);
}

function AddBottom(el,bk,color,size){
var i;
var d=document.createElement("b");
var cn="r";
var lim=4;
if(size && size=="small"){ cn="rs"; lim=2}
d.className="rbottom";
d.style.backgroundColor=bk;
for(i=lim;i>0;i--){
    var x=document.createElement("b");
    x.className=cn + i;
    x.style.backgroundColor=color;
    d.appendChild(x);
    }
el.appendChild(d,el.firstChild);
}

function getElementsBySelector(selector){
var i;
var s=[];
var selid="";
var selclass="";
var tag=selector;
var objlist=[];
if(selector.indexOf(" ")>0){  //descendant selector like "tag#id tag"
    s=selector.split(" ");
    var fs=s[0].split("#");
    if(fs.length==1) return(objlist);
    return(document.getElementById(fs[1]).getElementsByTagName(s[1]));
    }
if(selector.indexOf("#")>0){ //id selector like "tag#id"
    s=selector.split("#");
    tag=s[0];
    selid=s[1];
    }
if(selid!=""){
    objlist.push(document.getElementById(selid));
    return(objlist);
    }
if(selector.indexOf(".")>0){  //class selector like "tag.class"
    s=selector.split(".");
    tag=s[0];
    selclass=s[1];
    }
var v=document.getElementsByTagName(tag);  // tag selector like "tag"
if(selclass=="")
    return(v);
for(i=0;i<v.length;i++){
    if(v[i].className==selclass){
        objlist.push(v[i]);
        }
    }
return(objlist);
}