/** * DHTML date validation script. Courtesy of SmartWebby.com (http://www.smartwebby.com/dhtml/) */ // Declaring valid date character, minimum year and maximum year var dtCh= "/"; var minYear=1900; var maxYear=2100; function stripCharsInBag(s, bag){ var i; var returnString = ""; // Search through string's characters one by one. // If character is not in bag, append to returnString. for (i = 0; i < s.length; i++){ var c = s.charAt(i); if (bag.indexOf(c) == -1) returnString += c; } return returnString; } function daysInFebruary (year){ // February has 29 days in any year evenly divisible by four, // EXCEPT for centurial years which are not also divisible by 400. return (((year % 4 == 0) && ( (!(year % 100 == 0)) || (year % 400 == 0))) ? 29 : 28 ); } function DaysArray(n) { for (var i = 1; i <= n; i++) { this[i] = 31 if (i==4 || i==6 || i==9 || i==11) {this[i] = 30} if (i==2) {this[i] = 29} } return this } function isDate(dtStr){ var daysInMonth = DaysArray(12) var pos1=dtStr.indexOf(dtCh) var pos2=dtStr.indexOf(dtCh,pos1+1) var strMonth=dtStr.substring(0,pos1) var strDay=dtStr.substring(pos1+1,pos2) var strYear=dtStr.substring(pos2+1) strYr=strYear if (strDay.charAt(0)=="0" && strDay.length>1) strDay=strDay.substring(1) if (strMonth.charAt(0)=="0" && strMonth.length>1) strMonth=strMonth.substring(1) for (var i = 1; i <= 3; i++) { if (strYr.charAt(0)=="0" && strYr.length>1) strYr=strYr.substring(1) } month=parseInt(strMonth) day=parseInt(strDay) year=parseInt(strYr) if (pos1==-1 || pos2==-1){ return false } if (strMonth.length<1 || month<1 || month>12){ return false } if (strDay.length<1 || day<1 || day>31 || (month==2 && day>daysInFebruary(year)) || day > daysInMonth[month]){ return false } if (strYear.length != 4 || year==0 || yearmaxYear){ return false } if (dtStr.indexOf(dtCh,pos2+1)!=-1 || isInteger(stripCharsInBag(dtStr, dtCh))==false){ return false } return true } /** * DHTML email validation script. Courtesy of SmartWebby.com (http://www.smartwebby.com/dhtml/) */ function is_valid_email(str) { var at="@" var dot="." var lat=str.indexOf(at) var lstr=str.length var ldot=str.indexOf(dot) if (isBlank(str)) { return false } if (str.indexOf(at)==-1){ return false } if (str.indexOf(at)==-1 || str.indexOf(at)==0 || str.indexOf(at)==(lstr-1)){ return false } if (str.indexOf(dot)==-1 || str.indexOf(dot)==0 || str.indexOf(dot)==(lstr-1)){ return false } if (str.indexOf(at,(lat+1))!=-1){ return false } if (str.substring(lat-1,lat)==dot || str.substring(lat+1,lat+2)==dot){ return false } if (str.indexOf(dot,(lat+2))==-1){ return false } if (str.indexOf(" ")!=-1){ return false } return true } function fix_single_quotes(s){ var re; re = new RegExp("'"); return s.replace(re, "''") } function int_in_range(obj, lo, hi){ var i; var result; result = false; if (isInteger(obj.value) == true) { i = parseInt(obj.value); result = (i >= lo) && (i <= hi); } return result; } function formatURL(obj) { var s; var result; result = Trim(obj.value); s = result.toUpperCase(); if (!isBlank(s) && s.substring(0,7) != 'HTTP://') { result = 'http://' + result } return result } function parseDD(dd) { var i; var result; result = ''; for (var i = 0; i < dd.options.length; i++) { if (dd.options[i].selected && !isBlank(dd.options[i].text)) { result = result + dd.options[i].text + ', ' } } if (result.length > 0) { result = result.substring(0, result.length - 2) } return result } //------------------------------------------------------------------- // Trim functions // Returns string with whitespace trimmed //------------------------------------------------------------------- function LTrim(str) { for (var i=0; str.charAt(i)==" "; i++); return str.substring(i,str.length); } function RTrim(str) { for (var i=str.length-1; str.charAt(i)==" "; i--); return str.substring(0,i+1); } function Trim(str) { return LTrim(RTrim(str)); } //------------------------------------------------------------------- // isNull(value) // Returns true if value is null //------------------------------------------------------------------- function isNull(val) { if (val == null) { return true; } return false; } //------------------------------------------------------------------- // isBlank(value) // Returns true if value only contains spaces //------------------------------------------------------------------- function isBlank(val) { if (val == null) { return true; } for (var i=0; i < val.length; i++) { if ((val.charAt(i) != ' ') && (val.charAt(i) != "\t") && (val.charAt(i) != "\n")) { return false; } } return true; } //------------------------------------------------------------------- // isInteger(value) // Returns true if value contains all digits //------------------------------------------------------------------- function isInteger(val) { for (var i=0; i < val.length; i++) { if (!isDigit(val.charAt(i))) { return false; } } return true; } //------------------------------------------------------------------- // isNumeric(value) // Returns true if value contains a positive float value //------------------------------------------------------------------- function isNumeric(val) { var dp = false; if (isBlank(val)) { return false} for (var i=0; i < val.length; i++) { if (!isDigit(val.charAt(i))) { if (val.charAt(i) == '.') { if (dp == true) { return false; } // already saw a decimal point else { dp = true; } } else { return false; } } } return true; } //------------------------------------------------------------------- // isDigit(value) // Returns true if value is a 1-character digit //------------------------------------------------------------------- function isDigit(num) { var string="1234567890"; if (string.indexOf(num) != -1) { return true; } return false; }