Something

var topPos = 120;

function raise()
{

var pkgStyle = document.getElementById("pkg1").style;
topPos = topPos - 5;
if (topPos > 10) 
    {   pkgStyle.top = topPos + "px";
        setTimeout(raise, 25);
    }
else { pkgStyle.top = 10 + "px"; }

}

var heightPos = 100
function expand()
{
var pkgStyle = document.getElementById("pkg1").style;
heightPos = heightPos + 5;
if (heightPos < 400) 
    { pkgStyle.height = heightPos + "px";
      setTimeout(expand, 25);
    }
    
else { pkgStyle.height = "auto" }
}

function open()
{
    raise();
    expand();
    }