function keypress() 
{
	var key = window.event.keyCode;
	if (key == 13)
	{
		form_submit();
	}
}

function form_submit()
{
	f = document.search;

	f.search.focus();
	if (f.search_ok.value != 1)
	{
		f.search_ok.value = 1;
		f.search.disabled = true;
		f.submit();
	}
}

function keypress(f) 
{
	var key = window.event.keyCode;
	if (key == 13)
	{
		form_submit(f);
	}
}

submit_num = 0;
function form_submit(f)
{
	submit_num++;
	if (submit_num == 1)
	{
		f.search_ok.value = 1;
		f.submit();
	}
	else
	{
		alert("您提交的信息正在处理中，请不要重复提交！");
		return false;
	}
}

function delete_warn()
{
	if (confirm("确定要删除么？"))
		return true;
	else
		return false;
}