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- var timerlen = 5;
- var slideAniLen = 250;
- 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; // cannot slide down something that is already visible
- moving[objname] = true;
- dir[objname] = "down";
- startslide(objname);
- }
- function slideup(objname){
- if(moving[objname])
- return;
- if(document.getElementById(objname).style.display == "none")
- return; // cannot slide up something that is already hidden
- moving[objname] = true;
- dir[objname] = "up";
- startslide(objname);
- }
- function toggleSlide(objname){
- if(document.getElementById(objname).style.display == "none"){
- // div is hidden, so let's slide down
- slidedown(objname);
- }else{
- // div is not hidden, so slide up
- slideup(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;
- }
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