function out() {
	if(window.event.toElement.id!="submenu" && window.event.toElement.id!="link") 
	submenu.style.visibility="hidden"; 
} 

function on(){
	submenu.style.visibility="visible"; 
}

function checksearch(obj){
	if (obj.words.value==''){
		alert('Please enter keywords');
		obj.words.focus();
		return false;
	}
	return true;
}