var timerlen = 2;
var slideAniLen = 500;
var ti = slideAniLen/timerlen;
var i = 1;
var e;
var hpi;

var timerID = new Array();
var startTime = new Array();
var obj = new Array();
var endHeight = new Array();
var moving = new Array();
var dir = new Array();

minus = new Image();
minus.src = 'images/plus.gif';
function toggleImage(number) {
if (document.getElementById(number).src.match('images/cbtop1.png')) {
document.getElementById(number).setAttribute('style', 'background: url(images/cbtop2.png) repeat-x;');
}
else {
document.getElementById(number).setAttribute('style', 'background: url(images/cbtop2.png) repeat-x;');
}
}

function slidedown(objname,headname) {
if(moving[objname]) {
return;
}

if(document.getElementById(objname).style.display != "none") {
return; // cannot slide down something that is already visible
}

moving[objname] = true;
document.getElementById(headname).className = 'hover';
dir[objname] = "down";
startslide(objname,headname);
}

function slideup(objname,headname) {
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,headname);
}

var endHeightDynamic;

function getDynamicHeight(objname)
{
//if(!endHeightDynamic)
endHeightDynamic = document.getElementById(objname).scrollHeight;
endHeightDynamic = document.getElementById(objname).scrollHeight;
return endHeightDynamic;
}

// First StartSlide
function startslide(objname,headname){
obj[objname] = document.getElementById(objname);

startTime[objname] = (new Date()).getTime();

if(dir[objname] == "down"){
obj[objname].style.height = "1px";
obj[objname].style.display = "block";
}

endHeight[objname] = obj[objname].scrollHeight;
hpi = endHeight[objname]/ti;
timerID[objname] = setInterval('slidetick(\'' + objname + '\',\'' + headname + '\');',timerlen);
}


//second StartSlide
/*function startslide(objname){
obj[objname] = document.getElementById(objname);

if(dir[objname] == "down"){
obj[objname].style.height = "1px";
}

obj[objname].style.display = "block";
startTime[objname] = (new Date()).getTime();
endHeight[objname] = obj[objname].scrollHeight;

timerID[objname] = setInterval('slidetick(\'' + objname + '\');',timerlen);
} */
function slidetick(objname,headname){
var elapsed = (new Date()).getTime() - startTime[objname];

if (elapsed > slideAniLen) {
endSlide(objname,headname);
}
else {
var d = Math.ceil((elapsed / slideAniLen) * endHeight[objname]);
if(dir[objname] == "up") {
d = endHeight[objname] - d;
e = Math.round(((endHeight[objname]+15)/(hpi*i)));
if(e < 1.2) {
	e = e - 0.2;
}
d = d - e;
}

if (d < 0) {
d = 0;
}
obj[objname].style.height = d + "px";
}
i++;
return;
}

function endSlide(objname,headname){
clearInterval(timerID[objname]);

if(dir[objname] == "up") {
obj[objname].style.display = "none";
document.getElementById(headname).className = '';
}

else {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 unsetheight(objname2) {
	document.getElementById(objname2).style.height = '';
}

function toggleSlide(objname,headname) {
if(document.getElementById(objname).style.display == "none"){
// div is hidden, so let's slide down
slidedown(objname,headname);
} else {
// div is not hidden, so slide up
slideup(objname,headname);
}
endHeight[objname] = getDynamicHeight(objname);
}