var myDate=new Date();
var weekday=myDate.getDay();

if (weekday < 4)
{
	myDate.setDate(myDate.getDate()+(4-weekday));
}

if (weekday > 4)
{
	myDate.setDate(myDate.getDate()+(7+(4-weekday)));
}

var month = myDate.getMonth() + 1;
var day = myDate.getDate();
var year = myDate.getFullYear();
document.write(month + "/" + day + "/" + year);