// Checks for the following valid date formats: // DD/MM/YY DD/MM/YYYY DD-MM-YY DD-MM-YYYY // Also separates date into month, day, and year variables function isValidDate(dateStr, resultDate) { var datePat = /^(\d{1,2})(\/|-)(\d{1,2})\2(\d{2}|\d{4})$/; // To require a 4 digit year entry, use this line instead: // var datePat = /^(\d{1,2})(\/|-)(\d{1,2})\2(\d{4})$/; var matchArray = dateStr.match(datePat); // is the format ok? if (matchArray == null) { alert("Date is not in a valid format.") return false; } day = matchArray[1]; month = matchArray[3]; // parse date into variables year = matchArray[4]; if (day < 1 || day > 31) { alert("Day must be between 1 and 31."); return false; } if (month < 1 || month > 12) { // check month range alert("Month must be between 1 and 12."); return false; } if ((month==4 || month==6 || month==9 || month==11) && day==31) { alert("Month "+month+" doesn't have 31 days!") return false } if (month == 2) { // check for february 29th var isleap = (year % 4 == 0 && (year % 100 != 0 || year % 400 == 0)); if (day>29 || (day==29 && !isleap)) { alert("February " + year + " doesn't have " + day + " days!"); return false; } } // set MM/DD/YYYY format to resultDate resultDate.value = month + "/" + day + "/" + year return true; } function isEmpty(data) { var i; for (i=0; i < data.length; i++) { if (data.charAt(i) != ' ') { return false; } } return true; } function isInteger(data) { var numStr = "0123456789" var currChar var i if (isEmpty(data)) { return false; } for (i=0; i < data.length; i++) { currChar = data.charAt(i) if (numStr.indexOf(currChar) == -1) { // current char is not valid digit return false; } } return true; } function fccheck(nform,nname,nquestionno) { //alert(nname); var nchecked = 0; //var nquestionno = nname.substring(nname.length-1); //alert("qno: " + nquestionno); var nerrmsg = "Please answer Question " + nquestionno; var nlen = eval("document."+nform+"."+nname+".length"); //alert("nlen: " + nlen); if(nlen == 1) { if(eval("document."+nform+"."+nname+".checked")) { nchecked = parseInt(nchecked) + 1; } } else if (nlen > 1) { for(var i=0; i