// banner url
var banner_main_url = new String("/event/20110627_1/");
// banner img
var banner_main_img = new String("/img/big_bn_20110627.jpg");
// html write
document.write('<a href="'+banner_main_url+'"><img id="banner_main" src="'+banner_main_img+'" onMouseOver="fc_banner_main_onmouse()" onMouseOut="fc_banner_main_onmouseout()" /></a>');

var docelmid_bannermain = document.getElementById("banner_main");
var banner_opacity = 1;
function fc_banner_main_onmouse(){
  banner_opacity = 0.6;
  docelmid_bannermain.style.opacity= banner_opacity;
  docelmid_bannermain.style.filter='alpha(opacity="'+banner_opacity*100+'")';
  fc_banner_main_timeout();
}
function fc_banner_main_timeout(){
  if(banner_opacity<=1){
    banner_opacity+=0.02;
    docelmid_bannermain.style.opacity= banner_opacity;
    docelmid_bannermain.style.filter='alpha(opacity="'+banner_opacity*100+'")';
  }
  if(banner_opacity<=1){
    timeout_banner_main = setTimeout("fc_banner_main_timeout()",20)
    docelmid_bannermain.style.opacity= banner_opacity;
    docelmid_bannermain.style.filter='alpha(opacity="'+banner_opacity*100+'")';
  }
  if(banner_opacity>=1){
    clearTimeout(timeout_banner_main);
  }
}
function fc_banner_main_onmouseout(){
  banner_opacity = 1;
}