var timerlen = 5; var slideAniLen = 550; var timerID = new Array(); var startTime = new Array(); var obj = new Array(); var endHeight = new Array(); var moving = new Array(); var dir = new Array(); function slidedown(objname){ if(moving[objname])
return; if(document.getElementById(objname).style.display != "none")
return; moving[objname] = true; dir[objname] = "down"; startslide(objname);}
function slideup(objname){ if(moving[objname])
return; if(document.getElementById(objname).style.display == "none")
return; moving[objname] = true; dir[objname] = "up"; startslide(objname);}
function startslide(objname){ obj[objname] = document.getElementById(objname); endHeight[objname] = parseInt(obj[objname].style.height); startTime[objname] = (new Date()).getTime(); if(dir[objname] == "down"){ obj[objname].style.height = "1px";}
obj[objname].style.display = "block"; timerID[objname] = setInterval('slidetick(\'' + objname + '\');',timerlen);}
function slidetick(objname){ var elapsed = (new Date()).getTime() - startTime[objname]; if (elapsed > slideAniLen)
endSlide(objname)
else { var d =Math.round(elapsed / slideAniLen * endHeight[objname]); if(dir[objname] == "up")
d = endHeight[objname] - d; obj[objname].style.height = d + "px";}
return;}
function endSlide(objname){ clearInterval(timerID[objname]); if(dir[objname] == "up")
obj[objname].style.display = "none"; obj[objname].style.height = endHeight[objname] + "px"; delete(moving[objname]); delete(timerID[objname]); delete(startTime[objname]); delete(endHeight[objname]); delete(obj[objname]); delete(dir[objname]); return;}
function toggleSlide(objname){ if(document.getElementById(objname).style.display == "none"){ slidedown(objname);}else{ slideup(objname);}
}