function checkdate(elementID){

  	var dateDay = document.forms[elementID].depDay.value;
  	var MonthYear = document.forms[elementID].depMY.value;

  	var dateMonth = MonthYear.substr(0,2);
  	var dateYear = MonthYear.substr(2,4);

  	var dateString = dateYear+"/"+dateMonth+"/"+dateDay;

  	var myDate = new Date(dateString);
	var weekday=new Array(7);
	weekday[0]="Sun";
	weekday[1]="Mon";
	weekday[2]="Tue";
	weekday[3]="Wed";
	weekday[4]="Thu";
	weekday[5]="Fri";
	weekday[6]="Sat";

	if(document.forms[elementID].dayname.value!=weekday[myDate.getDay()]){
		document.forms[elementID].dayname.value=weekday[myDate.getDay()];
	}

	//setProduct();

//alert(dateString+" - "+weekday[myDate.getDay()]);

}