img1 = new Image(229,52);
img1.src = "images/btn_download_over.png";

function btnRolloverOver(btnId)
{
	document.getElementById(btnId).src = "images/btn_download_over.png";
}
function btnRolloverOut(btnId)
{
	document.getElementById(btnId).src = "images/btn_download.png";
}