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 (objname != "menu1") {
       		if(document.getElementById("menu1").style.display != "none")
        	slideup('menu1');
	}
        if (objname != "menu2") {
        	if(document.getElementById("menu2").style.display != "none")
        	slideup('menu2');
	}
        if (objname != "menu3") {
        	if(document.getElementById("menu3").style.display != "none")
        	slideup('menu3');
	}
        if (objname != "menu4") {
        	if(document.getElementById("menu4").style.display != "none")
        	slideup('menu4');
	}
        if (objname != "menu5") {
        	if(document.getElementById("menu5").style.display != "none")
        	slideup('menu5');
	}
        if (objname != "menu6") {
        	if(document.getElementById("menu6").style.display != "none")
        	slideup('menu6');
	}
        if (objname != "menu7") {
        	if(document.getElementById("menu7").style.display != "none")
        	slideup('menu7');
	}
        if (objname != "menu8") {
        	if(document.getElementById("menu8").style.display != "none")
        	slideup('menu8');
	}
        moving[objname] = true;


        dir[objname] = "down";


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


        startslide(objname);
}


function slidedown2(objname){
        if(moving[objname])
                return;
        if (objname != "menu1") {
       		if(document.getElementById("menu1").style.display != "none")
        	slideup('menu1');
	}
        if (objname != "menu2") {
        	if(document.getElementById("menu2").style.display != "none")
        	slideup('menu2');
	}
        if (objname != "menu3") {
        	if(document.getElementById("menu3").style.display != "none")
        	slideup('menu3');
	}
        if (objname != "menu4") {
        	if(document.getElementById("menu4").style.display != "none")
        	slideup('menu4');
	}
        moving[objname] = true;


        dir[objname] = "down";


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


        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);


	obj[objname].style.background = "none";
        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.background = "none";
		
	}




        //obj[objname].style.background = "url(images/grad.png) repeat-x bottom";


        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;
}