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 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] + "%";

        delete(moving[objname]);
        delete(timerID[objname]);
        delete(startTime[objname]);
        delete(endHeight[objname]);
        delete(obj[objname]);
        delete(dir[objname]);

        return;
}

function toggleSlide(objname,max){
  if((max>=1) && (document.getElementById('pmdiv1').style.display != "none")){ slideup('pmdiv1'); }
  if((max>=2) && (document.getElementById('pmdiv2').style.display != "none")){ slideup('pmdiv2'); }
  if((max>=3) && (document.getElementById('pmdiv3').style.display != "none")){ slideup('pmdiv3'); }
  if((max>=4) && (document.getElementById('pmdiv4').style.display != "none")){ slideup('pmdiv4'); }
  if((max>=5) && (document.getElementById('pmdiv5').style.display != "none")){ slideup('pmdiv5'); }
  if((max>=6) && (document.getElementById('pmdiv6').style.display != "none")){ slideup('pmdiv6'); }
  if((max>=7) && (document.getElementById('pmdiv7').style.display != "none")){ slideup('pmdiv7'); }
  if((max>=8) && (document.getElementById('pmdiv8').style.display != "none")){ slideup('pmdiv8'); }
  if((max>=9) && (document.getElementById('pmdiv9').style.display != "none")){ slideup('pmdiv9'); }
  if((max>=10) && (document.getElementById('pmdiv10').style.display != "none")){ slideup('pmdiv10'); }
  if((max>=11) && (document.getElementById('pmdiv11').style.display != "none")){ slideup('pmdiv11'); }
  if((max>=12) && (document.getElementById('pmdiv12').style.display != "none")){ slideup('pmdiv12'); }
  if((max>=13) && (document.getElementById('pmdiv13').style.display != "none")){ slideup('pmdiv13'); }
  if((max>=14) && (document.getElementById('pmdiv14').style.display != "none")){ slideup('pmdiv14'); }
  if((max>=15) && (document.getElementById('pmdiv15').style.display != "none")){ slideup('pmdiv15'); }
  if((max>=16) && (document.getElementById('pmdiv16').style.display != "none")){ slideup('pmdiv16'); }
  if((max>=17) && (document.getElementById('pmdiv17').style.display != "none")){ slideup('pmdiv17'); }
  if((max>=18) && (document.getElementById('pmdiv18').style.display != "none")){ slideup('pmdiv18'); }
  if((max>=19) && (document.getElementById('pmdiv19').style.display != "none")){ slideup('pmdiv19'); }
  if((max>=20) && (document.getElementById('pmdiv20').style.display != "none")){ slideup('pmdiv20'); }
  if((max>=21) && (document.getElementById('pmdiv21').style.display != "none")){ slideup('pmdiv21'); }
  if((max>=22) && (document.getElementById('pmdiv22').style.display != "none")){ slideup('pmdiv22'); }
  if((max>=23) && (document.getElementById('pmdiv23').style.display != "none")){ slideup('pmdiv23'); }
  if((max>=24) && (document.getElementById('pmdiv24').style.display != "none")){ slideup('pmdiv24'); }  
  if((max>=25) && (document.getElementById('pmdiv25').style.display != "none")){ slideup('pmdiv25'); }
  if((max>=26) && (document.getElementById('pmdiv26').style.display != "none")){ slideup('pmdiv26'); }
  if((max>=27) && (document.getElementById('pmdiv27').style.display != "none")){ slideup('pmdiv27'); }
  if((max>=28) && (document.getElementById('pmdiv28').style.display != "none")){ slideup('pmdiv28'); }            
  if((max>=29) && (document.getElementById('pmdiv29').style.display != "none")){ slideup('pmdiv29'); }
  if((max>=30) && (document.getElementById('pmdiv30').style.display != "none")){ slideup('pmdiv30'); }         
      
        
  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);
  }
}