var dtCh= "/";
var minYear=1900;
var maxYear=2100;

function todayDate() {
    var currentTime = new Date();
    var month = currentTime.getMonth() + 1;
    var day = currentTime.getDate();
    var year = currentTime.getFullYear();
    return month + "/" + day + "/" + year;
}

function containLetter(str) {
    var strChars = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz';
    for (var i = 0; i < str.length; i++) {
        if (strChars.indexOf(str.charAt(i)) != -1) {
            return true;
        }
    }
    return false;
}

function isInteger(s){
	var i;
    for (i = 0; i < s.length; i++){   
        // Check that current character is number.
        var c = s.charAt(i);
        if (((c < "0") || (c > "9"))) return false;
    }
    // All characters are numbers.
    return true;
}

function Isalphanumeric(alphane) {
    var numaric = alphane;
    for (var j = 0; j < numaric.length; j++) {
        var alphaa = numaric.charAt(j);
        var hh = alphaa.charCodeAt(0);
        if ((hh == 32) || (hh > 47 && hh < 58) || (hh > 64 && hh < 91) || (hh > 96 && hh < 123)) {
        }
        else {
            return false;
        }
    }
    return true;
}

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 TodayDate() {
    var today = new Date();
    var dd = today.getDate();
    var mm = today.getMonth() + 1; //January is 0!
    var yyyy = today.getFullYear();
    if (dd < 10) { dd = '0' + dd }
    if (mm < 10) { mm = '0' + mm }
    return mm + '/' + dd + '/' + yyyy;
}

function isDate(dtStr, fieldName){
    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){
	    alert("The date format should be : mm/dd/yyyy on " + fieldName);
	    return false;
	}
	if (strMonth.length<1 || month<1 || month>12){
	    alert("Please enter a valid month on " + fieldName);
	    return false;
	}
	if (strDay.length<1 || day<1 || day>31 || (month==2 && day>daysInFebruary(year)) || day > daysInMonth[month]){
	    alert("Please enter a valid day on " + fieldName);
	    return false;
	}
	if (strYear.length != 4 || year==0 || year<minYear || year>maxYear){
	    alert("Please enter a valid 4 digit year between " + minYear + " and " + maxYear);
	    return false;
	}
	if (dtStr.indexOf(dtCh,pos2+1)!=-1 || isInteger(stripCharsInBag(dtStr, dtCh))==false){
	    alert("Please enter a valid date on " + fieldName);
	    return false;
	}
	return true;
}

function convertToUpper(str) {
    var result = str.toUpperCase();
    return result;
}

function convertToUpper(str) {
    var result = str.toLowerCase();
    return result;
}

function convertFirstLetterUpper(str) {
    str = str.toLowerCase();
    var words = str.split(' ');
    var newWord = '';
    for (i = 0; i < words.length; i++) {
        newWord += words[i].charAt(0).toUpperCase() + words[i].substring(1, words[i].length) + ' ';
    }

    return newWord;

}

function convertTextBoxToUpper(txtObj) {
    var id = txtObj.id;
    var inp = document.getElementById(id);
    var x = inp.value;
    inp.value = x.toUpperCase();
}

function convertTextBoxToLower(txtObj) {
    var id = txtObj.id;
    var inp = document.getElementById(id);
    var x = inp.value;
    inp.value = x.toLowerCase();
}

function LTrim(value) {
    var re = /\s*((\S+\s*)*)/;
    return value.replace(re, "$1");
}
function RTrim(value) {
    var re = /((\s*\S+)*)\s*/;
    return value.replace(re, "$1");
}

function Trim(value) {
    return LTrim(RTrim(value));
}

function showhidetable(tblname, showhideflag) {
    if (showhideflag==1){
        document.getElementById(tblname).style.display='block';
    } else {
        document.getElementById(tblname).style.display='none';
    }
}

function addCommas(nStr) {
    nStr += '';
    x = nStr.split('.');
    x1 = x[0];
    x2 = x.length > 1 ? '.' + x[1] : '';
    var rgx = /(\d+)(\d{3})/;
    while (rgx.test(x1)) {
        x1 = x1.replace(rgx, '$1' + ',' + '$2');
    }
    return x1 + x2;
}