/* motionpack javascript enriched by Ioannis Sannos */

var timerlen = 5;
var slideAniLen = 250;
var timerID = new Array();
var startTime = new Array();
var slobj = new Array();
var endHeight = new Array();
var moving = new Array();
var sldir = new Array();

function toggleslide(objname) {
	if (moving[objname]) { return; }
	if (document.getElementById(objname).style.display == "none") {
		slidedown(objname);
	} else {
		slideup(objname);
	}
}

function toggleslidex(objname, morettext, lesstext) {
	if (moving[objname]) { return; }
	var motionboxa = document.getElementById('eshop_motionboxa');
	if (document.getElementById(objname).style.display == "none") {
		slidedown(objname);
		motionboxa.innerHTML = lesstext;
		motionboxa.setAttribute("class", "eshop_slideup");
	} else {
		slideup(objname);
		motionboxa.innerHTML = morettext;
		motionboxa.setAttribute("class", "eshop_slidedown");
	}
}

function slidedown(objname) {
    if(moving[objname]) { return; }
	// cannot slide down something that is already visible
	if (document.getElementById(objname).style.display != "none") { return; }
	moving[objname] = true;
	sldir[objname] = "down";
	startslide(objname);
}

function slideup(objname) {
	if(moving[objname]) { return; }
	// cannot slide up something that is already hidden
    if(document.getElementById(objname).style.display == "none") { return; }
	moving[objname] = true;
	sldir[objname] = "up";
	startslide(objname);
}

function startslide(objname) {
	slobj[objname] = document.getElementById(objname);
	endHeight[objname] = parseInt(slobj[objname].style.height);
	startTime[objname] = (new Date()).getTime();
	if(sldir[objname] == "down") { slobj[objname].style.height = "1px"; }
	slobj[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 (sldir[objname] == "up") { d = endHeight[objname] - d; }
		slobj[objname].style.height = d + "px";
    }
	return;
}

function endSlide(objname) {
        clearInterval(timerID[objname]);
        if(sldir[objname] == "up") { slobj[objname].style.display = "none"; }
        slobj[objname].style.height = endHeight[objname] + "px";
        delete(moving[objname]);
        delete(timerID[objname]);
        delete(startTime[objname]);
        delete(endHeight[objname]);
        delete(slobj[objname]);
        delete(sldir[objname]);
        return;
}