var intTimeStep=20; 
var isIe=(window.ActiveXObject)?true:false; 
var intAlphaStep=(isIe)?15:0.15; 
var curSObj=null; 
var curOpacity=null; 
function startObjVisible(objId) 
{ 
curSObj=document.getElementById(objId); 
setObjState(); 
} 
function setObjState(evTarget) 
{ 
if (curSObj.style.display==""){curOpacity=1;setObjClose();} 
else{ 
if(isIe) 
{ 
curSObj.style.cssText='DISPLAY: none;FILTER: alpha(opacity=0);POSITION:absolute;'; 
curSObj.filters.alpha.opacity=0; 
}else 
{ 
curSObj.style.opacity=0 
} 
curSObj.style.display=''; 

curOpacity=0; 
setObjOpen(); 
} 
} 

function setObjOpen() 
{ 
if(isIe) 
{ 
curSObj.filters.alpha.opacity+=intAlphaStep; 
if (curSObj.filters.alpha.opacity<100) setTimeout('setObjOpen()',intTimeStep); 
}else{ 
curOpacity+=intAlphaStep; 
curSObj.style.opacity =curOpacity; 
if (curOpacity<1) setTimeout('setObjOpen()',intTimeStep); 
} 
} 

function setObjClose() 
{ 
if(isIe) 
{ 
curSObj.filters.alpha.opacity-=intAlphaStep; 
if (curSObj.filters.alpha.opacity>0) { 
setTimeout('setObjClose()',intTimeStep);} 
else {curSObj.style.display="none";} 
}else{ 
curOpacity-=intAlphaStep; 
if (curOpacity>0) { 
curSObj.style.opacity =curOpacity; 
setTimeout('setObjClose()',intTimeStep);} 
else {curSObj.style.display='none';} 
} 
}