/* Author: 杨宇 yangyu@sina.cn */
//输入两个时间戳，计算差值，也就是相差的小时数，如返回2:10，则表示输入的两个时间相差2小时10分钟
function hours_min($start_time,$end_time){
if (strtotime($start_time) > strtotime($end_time)) list($start_time,$end_time) = array($end_time,$start_time);
$sec = $start_time - $end_time;
$sec = round($sec/60);
$min = str_pad($sec%60,2,STR_PAD_LEFT);
$hours_min = floor($sec/60);
$min != 0 && $hours_min .= ':'.$min;
return $hours_min;
}

function get_date_different(){
var _date_1 = document.getElementById('date1').value.replace(/(^\s*)|(\s*$)/g,'');
var _date_2 = document.getElementById('date2').value.replace(/(^\s*)|(\s*$)/g,'');
_date_1 = new Date(_date_1);
_date_2 = new Date(_date_2);
var days= _date_2.getTime() - _date_1.getTime();
var time = parseInt(days / (1000 * 60 * 60 * 24));
document.getElementById('content').innerHTML = '两个日期相差

天！';}