end_opacity = 60; increase_opacity_by = 15; timeout = 15; win = document.getElementById('tw'); winbackground = document.getElementById('wbg'); wincontent = document.getElementById('wc'); cur_opacity = 0;
var timer = null;
function sw() {
if(timeout > 0) { cur_opacity = 0;
winbackground.style.opacity = cur_opacity / 100;
winbackground.style.filter = "alpha(opacity=" + cur_opacity + ")";
win.style.display = 'block';
wincontent.style.display = 'none';
timer = setTimeout("increase_opacity()",timeout);
}else {winbackground.style.opacity = end_opacity / 100;
winbackground.style.filter = "alpha(opacity=" + end_opacity + ")";
win.style.display = 'block';
wincontent.style.display = 'block'; }}
function increase_opacity() {
cur_opacity += increase_opacity_by;
winbackground.style.opacity = cur_opacity / 100;
winbackground.style.filter = "alpha(opacity=" + cur_opacity + ")";
if(cur_opacity < end_opacity) {
timer = setTimeout("increase_opacity()",timeout);
} else {wincontent.style.display = 'block';
}}
function hw() {win.style.display = 'none'; }