function check_all(){
	for(i=0;i<document.getElementById('form1')["area[]"].length;i++){
		document.getElementById('form1')["area[]"][i].checked=true;
	}
}
function area_clear(){
	for(i=0;i<document.getElementById('form1')["area[]"].length;i++){
		document.getElementById('form1')["area[]"][i].checked=false;
	}
}

$(function(){
	restoreValue(document.form1);
});