function empty()
{
    foo = document.getElementsByTagName("input");
	for (i=0;i<foo.length;i++) {
		if (foo[i].className == "searchbox") {
		Hide = foo[i].id;
		    if (document.getElementById(Hide).value = "Search") {
	            document.getElementById(Hide).value = "";
	            document.getElementById(Hide).className = 'searchbox2';
	        }
		}
	}
}

function clickButton(e, buttonid){
    var evt = e ? e : window.event;
    var bt = document.getElementById(buttonid);
    if (bt){
        if (evt.keyCode == 13){
            bt.click();
            return false;
        }
    }
}