function searchBox(fb) {
	if(fb == 'f') {
		if (document.getElementById('search-box').value == "Enter keyword") {
			document.getElementById('search-box').value = "";
		}
	}
	if(fb == 'b') {
		if (document.getElementById('search-box').value == "") {
			document.getElementById('search-box').value = "Enter keyword";
		}
	}
}

btnMain = new Image();
btnMain.src = "http://www.experian.co.uk/www/images/btn_main_offer_nounderline.gif";
btnMainUnderline = new Image();
btnMainUnderline.src = "http://www.experian.co.uk/www/images/btn_main_offer_underline.gif";
function swapBtnMain(){
    theImg=document.getElementById("btnMain");
    theImg.setAttribute("src","http://www.experian.co.uk/www/images/btn_main_offer_underline.gif");
}
function restoreBtnMain(){
    theImg=document.getElementById("btnMain");
    theImg.setAttribute("src","http://www.experian.co.uk/www/images/btn_main_offer_nounderline.gif");
}