function ch(){
	 document.search.keyword.style.backgroundImage = "";
}

function CheckOthers(form){
	 for (var i=0;i < form.elements.length;i++){
		var e = form.elements[i];
		if (e.checked == false){
			e.checked = true;
		}else{
			e.checked = false;
		}
	 }
}

function CheckAll(form){
	 for (var i=0;i < form.elements.length;i++){
		var e = form.elements[i];
		e.checked = true;
	 }
}