function checkstartdate() {
	
	startdate = $('#startdate').val();
	enddate = $('#enddate').val();
	
	
	if ((enddate == '0') || (enddate <= startdate)) {
		
		//enddate.value = startdate.value;
		/*var startday = new Date(startdate).getDate();
		var startmonth = new Date(startdate).getMonth();
		var startyear = new Date(startdate).getFullYear();*/
		var startday = new Number (startdate.substr(8,2));
		var startmonth = new Number (startdate.substr(5,2));
		var startyear = new Number (startdate.substr(0,4));
		var newendDate = new Date(startyear,startmonth - 1,startday + 7);
		
		var newendDateMonth = newendDate.getMonth() + 1;
		var newendDateDay = newendDate.getDate();
		if ((newendDate.getMonth() +1) < 10) {
		    newendDateMonth = "0"+(newendDate.getMonth() +1);
		}
		if ((newendDate.getDate()) < 10) {
		    newendDateDay = "0"+(newendDate.getDate());
		}
		
		$('#enddate').val(newendDate.getFullYear()+"-"+newendDateMonth+"-"+newendDateDay);
		
		
	}


}
function checkenddate() {
	

	enddate = $('#enddate').val();
	startdate  = $('#startdate').val();
	
	if ((startdate == '0') || (startdate >= enddate)) {
		
		//startdate.value = enddate.value;
		/*var endday = new Date(enddate).getDate();
		var endmonth = new Date(enddate).getMonth();
		var endyear = new Date(enddate).getFullYear();*/
		var endday = new Number (enddate.substr(8,2));
		var endmonth = new Number (enddate.substr(5,2));
		var endyear = new Number (enddate.substr(0,4));
		var newstartDate = new Date(endyear, endmonth - 1, endday - 7);
		
		var newstartDateMonth = newstartDate.getMonth() + 1;
		var newstartDateDay = newstartDate.getDate();
		if ((newstartDate.getMonth() +1) < 10) {
		    newstartDateMonth = "0"+(newstartDate.getMonth() +1);
		}
		if ((newstartDate.getDate()) < 10) {
		    newstartDateDay = "0"+(newstartDate.getDate());
		}
		
		
		$('#startdate').val(newstartDate.getFullYear()+"-"+newstartDateMonth+"-"+newstartDateDay);
		
	}
	
}