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 toggletab(elem) {
	var t = document.getElementById(elem);
	t.style.backgroundColor = "#999999";
}

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 slidencheck (objname, caretname, menuname, menucolor, obj2, caret2, menu2){

	if(document.getElementById(obj2).style.display == "none"){
		// div is hidden, so go ahead and toggle
		toggleSlide(objname, caretname, menuname, menucolor);
	}else{
		//slide up
		secondslide(obj2);
		document.getElementById(caret2).innerHTML = "▼";
		var t = document.getElementById(menu2);
		t.style.backgroundColor = "#000000";

		//delay to wait till slide-up done
		//setTimeout('toggleSlide()',350,objname, caretname, menuname, menucolor);
		toggleslide(objname, caretname, menuname, menucolor);

	}
	/*
	if(document.getElementById(objname).style.display == "none"){
		// div is hidden, so let's slide down
		slidedown(objname);
		document.getElementById(caretname).innerHTML = "▲";
		var t = document.getElementById(menuname);
		t.style.backgroundColor = menucolor;
	}else{
		// div is not hidden, so slide up
		slideup(objname);
		document.getElementById(caretname).innerHTML = "▼";
		var t = document.getElementById(menuname);
		t.style.backgroundColor = "#000000";
	}
	*/	
}

function secondslide(obj){
	slideup(obj);
}

function checkother(objname, caretname, menuname) {
	if(document.getElementById(objname).style.display == "none"){
		// div is hidden, so nevermind
	}else{
		slideup(objname);
		document.getElementById(caretname).innerHTML = "▼";
		var t = document.getElementById(menuname);
		t.style.backgroundColor = "#000000";
	}
}

function toggleSlide(objname, caretname, menuname, menucolor, obj2, caret2, menu2){ //
	//checkother(obj2, caret2, menu2);
	if(document.getElementById(obj2).style.display == "none"){
	
		if(document.getElementById(objname).style.display == "none"){
			// div is hidden, so let's slide down
			slidedown(objname);
			document.getElementById(caretname).innerHTML = "▲";
			var t = document.getElementById(menuname);
			t.style.backgroundColor = menucolor;
		}else{
			// div is not hidden, so slide up
			slideup(objname);
			document.getElementById(caretname).innerHTML = "▼";
			var t = document.getElementById(menuname);
			t.style.backgroundColor = "#000000";
		}
	} else {
		slideup(obj2);
		document.getElementById(caret2).innerHTML = "▼";
		var t = document.getElementById(menu2);
		t.style.backgroundColor = "#000000";

		setTimeout(function() { slidedown(objname); },(slideAniLen+4));
		//slidedown(objname);
		document.getElementById(caretname).innerHTML = "▲";
		var t = document.getElementById(menuname);
		t.style.backgroundColor = menucolor;
		
	}
}