var timerlen = 21;
var slideAniLen = 311;
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 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 show(objname1,objnum1){



     for (i=1; i<=4; i++)
    	{	 
		if (i == objnum1) 
		;
		
		else 
		var checker='if(document.getElementById("submenu'+i+'").style.display == "block"){ slideup("submenu'+i+'"); }else{ }';
		eval(checker);
		
	}
  
      slidedown(objname1);
  }
function hideall(){

     for (i=1; i<=4; i++)
    	{	 
		var checker='if(document.getElementById("submenu'+i+'").style.display == "block"){ slideup("submenu'+i+'"); }else{ }';
		eval(checker);
	}
  }