var up=0;

var big_img;

var big_title;

var photo;

function sl_start()

{

	if(sl_on)return;

  sl_on=true;

  var k=2;

  var tmp=document.getElementById('div_photo');

  tmp.style['top']="0px";

  tmp=document.getElementById('etc_1');

  tmp.style.display="none";

  up=document.getElementById("center_photo_info").clientHeight;

  photo=document.getElementById('div_photo');

  document.getElementById('big_photo_img').style.cursor="pointer";

	sl_moveup();

if(typeof(sl_timer)!="undefined")  clearTimeout(sl_timer);

  big_img=document.getElementById("big_photo_img");

  big_title=document.getElementById("big_title");

  sl_timer=setTimeout("sl_loop()",1000*sl_interval);

}



function sl_moveup()

{

  y=parseInt(photo.style["top"]);

  y-=(up+y)*(-y)/(up)+1;

  photo.style['top']=y+"px";

  if(y>-up)

  {

  setTimeout("sl_moveup()",50);

  }

  else

  {

	document.getElementById("center_photo_info").style['display']="none";

  photo.style['top']="0px";

  }

}



function sl_stop()

{

  sl_on=false;

  sl_timer=setTimeout("sl_loop()",1000*3);

  clearTimeout(sl_timer);

  window.location=sl_list[npos]['url'];



}

function sl_change_interval()

{

 sl_interval=document.getElementById("update_interval").value;

 if(sl_on)

 {

  clearTimeout(sl_timer);

  sl_timer=setTimeout("sl_loop()",1000*sl_interval);

 }



}



function sl_loop()

{

  if(sl_on)

  {

    npos++;

    if(npos==sl_list_count)npos=0;

    big_img.src=sl_list[npos]['src'];

    big_img.alt=sl_list[npos]['name'];

    big_img.title=sl_list[npos]['name'];

    big_title.innerHTML=sl_list[npos]['name'];

    sl_timer=setTimeout("sl_loop()",1000*sl_interval);

  }

}