// JavaScript Document

// ===================================================================
// String functions
//-------------------------------------------------------------------
function LTrim(str){
	if (str==null){return null;}
	for(var i=0;str.charAt(i)==" ";i++);
	return str.substring(i,str.length);
	}
	
function RTrim(str){
	if (str==null){return null;}
	for(var i=str.length-1;str.charAt(i)==" ";i--);
	return str.substring(0,i+1);
	}
	
function Trim(str){return LTrim(RTrim(str));}

function LTrimAll(str) {
	if (str==null){return str;}
	for (var i=0; str.charAt(i)==" " || str.charAt(i)=="\n" || str.charAt(i)=="\t"; i++);
	return str.substring(i,str.length);
	}
	
function RTrimAll(str) {
	if (str==null){return str;}
	for (var i=str.length-1; str.charAt(i)==" " || str.charAt(i)=="\n" || str.charAt(i)=="\t"; i--);
	return str.substring(0,i+1);
	}
	
function TrimAll(str) {
	return LTrimAll(RTrimAll(str));
	}

// string add comma separated value
function strsCsvStr(curstr, newstr) {
	if (curstr!="") curstr+=", ";
	curstr+=newstr;
	return curstr;
}

// strip punctuation
function stripMarks(text) {
	marks="\" .,;!#$/:?\'()[]_\\";
	str="";

	for (i=0; i<text.length; i++) {
		mark=text.charAt(i);
		if (marks.indexOf(mark) != -1) {
			str+=mark;
		} else {
			str+="-";
		}
	}
	return str;
}

//-------------------------------------------------------------------
// isNull(value)
//   Returns true if value is null
//-------------------------------------------------------------------
function isNull(val){return(val==null);}

//-------------------------------------------------------------------
// FloatVal(value)
//   Returns float value of string, 0.00 if null
//-------------------------------------------------------------------
function floatVal(text) {
	number="-.0123456789";
	hasmin=false;
	hasdec=false;
	str="";

	for (i=0; i<text.length; i++) {
		digit=text.charAt(i);
		if (text.indexOf(digit) != -1) {
			if (digit=="-") {
				hasmin=!hasmin;
			} else {
				if (digit==".") {
					if (!hasdec) {
						hasdec=true;
						str=str+".";
					}
				} else {
					str=str+digit;
				}
			}
		}
	}
	
	if (str=="") {
		str="0.00";
	} else {
		if (str.parseFloat != 0) {
			if (hasmin) str="-"+str;
		}
	}
	
	return str
}

// integer value
function intVal(text) {
	number="0123456789";
	str="";

	for (i=0; i<text.length; i++) {
		digit=text.charAt(i);
		if (text.indexOf(digit) != -1) {
			str=str+digit;
		}
	}
	
	if (str=="") {
		str="0";
	}
	
	return str
}

// string to date
function strToDate(text) {
	var rdt=new Date(parseInt(text.substr(6,4)), 
					parseInt(text.substr(0,2)), 
					parseInt(text.substr(3,2)),
					0, 0, 0, 0);
	return rdt;
}

function leadZero2(x){
   y=(x>9)?x:'00'+x;
   y=(x>99)?x:'0'+x;
   return y;
}

// generate captcha
// get new reference
function getcaptcha(ln) {
	easy="ABCDEFHJKLMNPRSTVWXYZ";
	cstr="";
	while(cstr.length<ln) {
		rand=Math.round(21*Math.random());
		cstr=cstr+easy.substr(rand-1, 1);
	}
	return cstr;
}

// format currency
function CurrencyFormatted(amount)
{
	var i = parseFloat(amount);
	if(isNaN(i)) { i = 0.00; }
	var minus = '';
	if(i < 0) { minus = '-'; }
	i = Math.abs(i);
	i = parseInt((i + .005) * 100);
	i = i / 100;
	s = new String(i);
	if(s.indexOf('.') < 0) { s += '.00'; }
	if(s.indexOf('.') == (s.length - 2)) { s += '0'; }
	s = minus + s;
	return s;
}

/**
 * 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 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 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){
		alert("The date format should be : mm/dd/yyyy")
		return false
	}
	if (strMonth.length<1 || month<1 || month>12){
		alert("Please enter a valid month")
		return false
	}
	if (strDay.length<1 || day<1 || day>31 || (month==2 && day>daysInFebruary(year)) || day > daysInMonth[month]){
		alert("Please enter a valid day")
		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")
		return false
	}
return true
}