function isDateString(sDate){var iaMonthDays=[31,28,31,30,31,30,31,31,30,31,30,31];var iaDate=new Array(3);var year,month,day;if(arguments.length!=1)return false;iaDate=sDate.toString().split("-");if(iaDate.length!=3)return false;if(iaDate[1].length>2||iaDate[2].length>2)return false;year=parseFloat(iaDate[0]);month=parseFloat(iaDate[1]);day=parseFloat(iaDate[2]);if(year<1900||year>2100)return false;if(((year%4==0)&&(year%100!=0))||(year%400==0))iaMonthDays[1]=29;if(month<1||month>12)return false;if(day<1||day>iaMonthDays[month-1])return false;return true;}function stringToDate(sDate,bIgnore){var bValidDate,year,month,day;var iaDate=new Array(3);if(bIgnore)bValidDate=true;else bValidDate=isDateString(sDate);if(bValidDate){iaDate=sDate.toString().split("-");year=parseFloat(iaDate[0]);month=parseFloat(iaDate[1])-1;day=parseFloat(iaDate[2]);return(new Date(year,month,day));}else return(new Date(1900,1,1));}