/***********************************************  
* Carousel Slideshow II- By Harry Armadillo   
* (http://www.codingforums.com/showthread.php?t=58814)  
***********************************************/  
  
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(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,'_'))   
  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(60000/params.sides/params.steps/params.speed)-5;   
  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);   
  }