function trim(s) 
{
  
  while ((s.substring(0,1) == ' ') || (s.substring(0,1) == '\n') || (s.substring(0,1) == '\r'))
  {
    s = s.substring(1,s.length);
  }


  while ((s.substring(s.length-1,s.length) == ' ') || (s.substring(s.length-1,s.length) == '\n') || (s.substring(s.length-1,s.length) == '\r'))
  {
    s = s.substring(0,s.length-1);
  }
  return s;
}

function checkblnk(a)
{
	
	if (trim(a.value)=="")
	{
		alert("Please enter value");
		a.focus();
		return false;
	}
	return true;
}
function checkblnk_m(a,b)
{
	if (trim(a.value)=="")
	{
		alert("Oops! Please make sure the "+b+" is correct");
		a.focus();
		return false;
	}
	return true;
}

function checkblnk_m_e(a,b)
{
	
	if (trim(a.value)=="")
	{
		eval("document.all."+b+"c.style.display = 'none';");
		eval("document.all."+b+"c1.style.display = 'inline';");
		a.focus();
		return false;
	}
	eval("document.all."+b+"c1.style.display = 'none';");
	eval("document.all."+b+"c.style.display = 'inline';");
	return true;
}

function justcheckblnk(a)
{
	
	if (trim(a.value)=="")
	{
		return false;
	}
	return true;
}
function checkblnk_radio(a, b)
{
	for (i=0;i<a.length;i++)
	{
		if(a[i].checked)
		{
			return true;
		}
	}							
	alert("Please select one value for"+b);
	//a.focus();
	return false;
}
function check_username(a) {
	e=a.value;
	ok = "1234567890 qwertyuiopasdfghjklzxcvbnm.-_QWERTYUIOPASDFGHJKLZXCVBNM@";

	for(i=0; i < e.length ;i++){
		if(ok.indexOf(e.charAt(i))<0){ 
		alert('Wrong value. Special characters not allowed.');
		a.focus();
		return (false);
		}	
	} 
	return true;
}

function check_special(a) {
	e=a.value;
	ok = "&\"'<>";

	for(i=0; i < e.length ;i++){
		if(ok.indexOf(e.charAt(i))>=0){ 
		alert('Wrong value. No & " \' < > allowed.');
		a.focus();
		return (false);
		}	
	} 
	return true;

}
function check_special_m(a,b) {
	e=a.value;
	ok = "&\"'<>";

	for(i=0; i < e.length ;i++){
		if(ok.indexOf(e.charAt(i))>=0){ 
		alert('Wrong value for '+b+'. No & " \' < > allowed.');
		a.focus();
		return (false);
		}	
	} 
	return true;

}


function checknumber(a){
	var x=a.value;
	var anum=/(^\d+$)|(^\d+\.\d+$)/;
	if (anum.test(x))
	{
		testresult=true;
	}
	else{
		alert("Please input a valid number!");
		a.focus();
		testresult=false;
	}
	return (testresult);
}

function check_number(a) {
	e=a.value;
	ok = "1234567890-() ";

	for(i=0; i < e.length ;i++){
		if(ok.indexOf(e.charAt(i))<0){ 
		alert('Wrong value. Only number ,- or () allowed.');
		a.focus();
		return (false);
		}	
	} 
	return true;

}
function check_number_m(a,b) {
	e=a.value;
	ok = "1234567890-() ";

	for(i=0; i < e.length ;i++){
		if(ok.indexOf(e.charAt(i))<0){ 
		alert('Wrong value for '+b+'. Only number ,- or () allowed.');
		a.focus();
		return (false);
		}	
	} 
	return true;

}


function check_email(a) {
	e=a.value;
	ok = "1234567890qwertyuiop[]asdfghjklzxcvbnm.@-_QWERTYUIOPASDFGHJKLZXCVBNM";

	for(i=0; i < e.length ;i++){
		if(ok.indexOf(e.charAt(i))<0){ 
		alert('Invalid email address');
		a.focus();
		return (false);
		}	
	} 
	re = /(@.*@)|(\.\.)|(^\.)|(^@)|(@$)|(\.$)|(@\.)/;
	re_two = /^.+\@(\[?)[a-zA-Z0-9\-\.]+\.([a-zA-Z]{2,4}|[0-9]{1,3})(\]?)$/;
	if (!e.match(re) && e.match(re_two)) {
		return true;		
	} 
	alert('Invalid email address');
	a.focus();
	return false;

}
function check_email_m(a,b) {
	e=a.value;
	ok = "1234567890qwertyuiop[]asdfghjklzxcvbnm.@-_QWERTYUIOPASDFGHJKLZXCVBNM";

	for(i=0; i < e.length ;i++){
		if(ok.indexOf(e.charAt(i))<0){ 
		alert('Invalid email address');
		a.focus();
		return (false);
		}	
	} 
	re = /(@.*@)|(\.\.)|(^\.)|(^@)|(@$)|(\.$)|(@\.)/;
	re_two = /^.+\@(\[?)[a-zA-Z0-9\-\.]+\.([a-zA-Z]{2,4}|[0-9]{1,3})(\]?)$/;
	if (!e.match(re) && e.match(re_two)) {
		return true;		
	} 
	alert('Invalid email address');
	a.focus();
	return false;

}

function check_name(a) {
	e=a.value;
	ok = "1234567890 qwertyuiopasdfghjklzxcvbnm.-_QWERTYUIOPASDFGHJKLZXCVBNM";

	for(i=0; i < e.length ;i++){
		if(ok.indexOf(e.charAt(i))<0){ 
		alert('Wrong value. Special characters not allowed.');
		a.focus();
		return (false);
		}	
	} 
	return true;

}
function check_name_m(a,b) {
	e=a.value;
	ok = "1234567890 qwertyuiopasdfghjklzxcvbnm.-_QWERTYUIOPASDFGHJKLZXCVBNM";

	for(i=0; i < e.length ;i++){
		if(ok.indexOf(e.charAt(i))<0){ 
		alert('Wrong value for '+b+'. Special characters not allowed.');
		a.focus();
		return (false);
		}	
	} 
	return true;

}

var reFloat = /^((\d+(\.\d*)?)|((\d*\.)?\d+))$/
function isFloat (s)
{   if (isEmpty(s)) 
       if (isFloat.arguments.length == 1) return defaultEmptyOK;
       else return (isFloat.arguments[1] == true);

    return reFloat.test(s)
}
function isEmpty(s)
{   return ((s == null) || (s.length == 0))
}

function check_float_m(a,b) {
	e=a.value;
	if (!isFloat(e))
	{		
		alert('Wrong value for '+b+'. Only number allowed.');
		a.focus();
		return (false);
	} 
	return true;
}


/**
 * 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
}