function SetOpacity(object,opacityPct)
{object.style.filter='alpha(opacity='+opacityPct+')';object.style.MozOpacity=opacityPct/100;object.style.opacity=opacityPct/100;}
function ChangeOpacity(id,msDuration,msStart,fromO,toO)
{var element=document.getElementById(id);var opacity=element.style.opacity*100;var msNow=(new Date()).getTime();opacity=fromO+(toO-fromO)*(msNow-msStart)/msDuration;if(opacity<0)
SetOpacity(element,0)
else if(opacity>100)
SetOpacity(element,100)
else
{SetOpacity(element,opacity);element.timer=window.setTimeout("ChangeOpacity('"+id+"',"+msDuration+","+msStart+","+fromO+","+toO+")",1);}}
function FadeIn(id)
{var element=document.getElementById(id);if(element.timer)window.clearTimeout(element.timer);var startMS=(new Date()).getTime();element.timer=window.setTimeout("ChangeOpacity('"+id+"',1000,"+startMS+",0,100)",1);}
function FadeOut(id)
{var element=document.getElementById(id);if(element.timer)window.clearTimeout(element.timer);var startMS=(new Date()).getTime();element.timer=window.setTimeout("ChangeOpacity('"+id+"',1000,"+startMS+",100,0)",1);}
function FadeInImage(foregroundID,newImage,backgroundID)
{var foreground=document.getElementById(foregroundID);if(backgroundID)
{var background=document.getElementById(backgroundID);if(background)
{background.style.backgroundImage='url('+foreground.src+')';background.style.backgroundRepeat='no-repeat';}}
SetOpacity(foreground,0);foreground.src=newImage;if(foreground.timer)window.clearTimeout(foreground.timer);var startMS=(new Date()).getTime();foreground.timer=window.setTimeout("ChangeOpacity('"+foregroundID+"',1000,"+startMS+",0,100)",10);}