function fireLeftArrowBtn() {
	document.getElementById("leftBtnSpan").getElementsByTagName("input")[0].click();
}

function fireRightArrowBtn() {
    var spanEl=document.getElementById("rightBtnSpan");
	var els=spanEl.getElementsByTagName("input");
	if (els.length>0) els[0].click();
	else {
	    els=spanEl.getElementsByTagName("a");
	    if (els.length>0) {
	        els[0].onclick();
	    } else {
	        alert("Found no element to click.");
	    }
	}
}