function is_everyone_click()
{
	if(document.getElementById("is_everyone").checked)
	{
		checkAll(true);
		return;
	}
	else
	{
		checkAll(false);
		return;
	}
}

function to_id_click(obj)
{
	if(obj.checked == false)
	{
		document.getElementById("is_everyone").checked = false;
		return;
	}
	
	document.getElementById("is_everyone").checked = isAllChecked();
}

function checkAll(checked)
{
	document.getElementById("is_everyone").checked = checked;
	objs = document.getElementsByName("url[]");
	for(i = 0; i < objs.length; i++)
	{
    	objs[i].checked = checked;
	}
}

function isAllChecked()
{
	objs = document.getElementsByName("url[]");
	for(i = 0; i < objs.length; i++)
	{
    	if(objs[i].checked == false) return false;
	}
	return true;
}

function checkCB2() {
if(document.myForm.areaTAll.checked==false){
for (i=1; i<10; i++) document.myForm.elements["areaT0"+i].checked = true;
document.myForm.areaTAll.checked = true;
return;
}
else if(document.myForm.areaTAll.checked==true){
for (i=1; i<10; i++) document.myForm.elements["areaT0"+i].checked = false;
document.myForm.areaTAll.checked = false;
return;
}
}