function limtSign(){
var nowTime = new Date();
var hour = nowTime.getHours();
var min = nowTime.getMinutes();
var nowTimes = (hour*60)+min;
var nstartTime = (7*60+30);
var nendTime = 12*60;
var mstartTime = (13*60+30);
var mendTime = (17*60+30);
if((nowTimes>nstartTime&&nowTimes<nendTime)||(nowTimes>mstartTime&&nowTimes<mendTime)){
return true;
}
return false;
}