// JavaScript Document

function carousel(params){

  if(!(params.width>0 && isFinite(params.width)))params.width=100;

  if(!(params.height>0 && isFinite(params.height)))params.height=100;

  if(!(params.sides>2 && isFinite(params.sides)))params.sides=4;

  if(!(params.steps>0 && params.steps<100 && isFinite(params.steps)))params.steps=20;

  if(!(params.speed>0 && isFinite(params.speed)))params.speed=8;

  if(!(params.image_border_width>=0 && isFinite(params.image_border_width)))params.image_border_width=0;

  if(!(params.image_border_color!="" && isFinite(params.image_border_color)))params.image_border_color="";

  if(isFinite(params.id)||!params.id)params.id='bad_id_given_'+Math.random();

  document.write("<div style='position:relative;overflow:hidden;' id='"+params.id.replace(/[^a-zA-Z0-9]+/g,'_')+"'></div>");

  var cdiv=document.getElementById(params.id.replace(/[^a-zA-Z0-9]+/g,'_'))
  alert(cdiv);
  cdiv.style.width=params.width+'px';

  cdiv.style.height=params.height+'px';

  cdiv.style.border=params.border;

  cdiv.style.position='relative';

  cdiv.style.overflow='hidden';

  cdiv.title=params.id;

    

  var counter=0,spinning=true,interval=Math.floor(params.speed);

  interval=isNaN(interval)?200:interval;

  var img_position=[],images=[],img_dimension=[];

  var img_index=params.images.length+1,img_index_cap=2*params.images.length;

  var faces=Math.ceil(params.sides/2), dimension, direction, targ, attr, faraway;



  function init(){

    if(params.direction=="left" || params.direction=="right"){

      direction=params.direction;

      dimension="width";

      }

    else if(params.direction=="top" || params.direction=="bottom"){

      direction=params.direction;

      dimension="height";

      }

    else {

      direction="left";

      dimension="width";

      }      

    faraway=(direction=="left"||direction=="top")?'-20000px':'20000px';

    cdiv.style[dimension]=params[dimension]/(params.size_mode=='image'?Math.sin(Math.PI/params.sides):1)+'px';

    var img=new Image();

    img.style.position='absolute';

    img.style[direction]=faraway;

    img.style.width=params.width-2*params.image_border_width+'px';

    img.style.height=params.height-2*params.image_border_width+'px';

    img.style.border=(params.image_border_width||0)+'px solid '+params.image_border_color;
  

    for(var i=0;i<params.images.length;i++){

      images[i]=img.cloneNode(true);

      images[i].src=params.images[i];

      if(params.links && params.links[i] && params.links[i]!=''){

        targ=params.lnk_targets && params.lnk_targets[i]||params.lnk_base||'new';

        if(targ=="_blank"){

          attr=(params.lnk_attr && params.lnk_attr[i])?",'"+params.lnk_attr[i]+"'":"";

          images[i].onclick=new Function("window.open('"+params.links[i]+"','"+targ+"'"+attr+")");

          }

        else if(targ.substr(0,1)=="_"){

          images[i].onclick=new Function(targ.substr(1)+".location='"+params.links[i]+"'");

          }

        else{

          attr=(params.lnk_attr && params.lnk_attr[i])?",'"+params.lnk_attr[i]+"'":"";

          images[i].onclick=new Function("var t='"+targ+"';if(window[t]){try{window[t].close()}catch(z){}}window[t]=window.open('"+params.links[i]+"',t"+attr+");window[t].focus()");

          }

        images[i].style.cursor=document.all?'hand':'pointer';

        }



      if(params.titles && params.titles[i] && params.titles[i]!='')

        images[i].title=params.titles[i];

      if(document.all)

        images[i].alt=images[i].title;

      images[i+params.images.length]=images[i];

      if(params.images.length==faces)

        images[i+2*params.images.length]=images[i];

      cdiv.appendChild(images[i]);

      }

  

    var face_size=params.size_mode=='image'?params[dimension]:params[dimension]*Math.sin(Math.PI/params.sides);

    var face_offset=params[dimension]*Math.cos(Math.PI/params.sides)/(params.size_mode=='image'?Math.sin(Math.PI/params.sides):1)/2-.5;

    var pi_piece=2*Math.PI/params.steps/params.sides;

    for(i=0;i<=params.steps*faces;i++){

      img_dimension[i]=face_size*Math.sin(pi_piece*i);

      img_position[i]=(i<params.steps*params.sides/2)?Math.floor(params[dimension]/2/(params.size_mode=='image'?Math.sin(Math.PI/params.sides):1)-face_offset*Math.cos(pi_piece*i)-img_dimension[i]/2)+'px':faraway;

      img_dimension[i]=img_dimension[i]-2*params.image_border_width>1?Math.ceil(img_dimension[i])-2*params.image_border_width+'px':'1px';

      }

    }

  init();



  cdiv.rotate = function(){

    setTimeout('document.getElementById("'+cdiv.id+'").rotate()',interval);

    if(!spinning) return;

    if(++counter>=params.steps){

      counter=0;

      if(++img_index>=img_index_cap)

        img_index=params.images.length;

      }

    images[img_index-faces].style[direction]=faraway;

    for(var i=faces-1;i>=0;i--){

      images[img_index-i].style[direction]=img_position[counter+i*params.steps];

      images[img_index-i].style[dimension]=img_dimension[counter+i*params.steps];

      }

    }

  cdiv.onmouseover=function(){

    spinning=false;

    }

  cdiv.onmouseout=function(){

    spinning=true;

    }

  setTimeout('document.getElementById("'+cdiv.id+'").rotate()',100);

  }