var timerlen = 5;
var slideAniLen = 500;
var panelWidth = 600;
var panelHeight = 430;

var currentOpen;

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

var designObj = document.getElementById('designContainer');
var printObj = document.getElementById('printContainer');
var webObj = document.getElementById('webContainer');
var photoObj = document.getElementById('photoContainer');

function slidedown(objname){
	//alert("YO!");
	if(currentOpen || objname == null){
		slideup(currentOpen);
	}
	
	if(currentOpen = objname){
		slideup(currentOpen);
	}
	
        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);
        contentStuff = document.getElementById(objname + "Stuff");

        endHeight[objname] = panelHeight;
        endWidth[objname] = panelWidth;
        startTime[objname] = (new Date()).getTime();

        if(dir[objname] == "down"){
        	//alert("yo!");
        	obj[objname].style.display = "inline-block";
                obj[objname].style.height = "1px";
                obj[objname].style.width = "1px";
        }
        
        if(dir[objname] == "up"){
        	contentStuff.style.display = "none";
        }

        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]);
                var r =Math.round(elapsed / slideAniLen * endWidth[objname]);
                if(dir[objname] == "up") {
                        d = endHeight[objname] - d;
                        r = endWidth[objname] - r;
                } else {
                        d = endHeight[objname] + d - panelHeight;
                        r = endWidth[objname] + r - panelWidth;
                }

                obj[objname].style.height = d + "px";
                obj[objname].style.width = r + "px";
        }

        return;
}

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

        if(dir[objname] == "up") {
                obj[objname].style.display = "none";
        } else {
		contentStuff.style.display = "block";
	}

        obj[objname].style.height = endHeight[objname] + "px";
        obj[objname].style.width = endWidth[objname] + "px";

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