// email check.
function emailCheck (emailStr)
{
	var emailPat=/^(.+)@(.+)$/;
	var specialChars="\\(\\)<>@,;:\\\\\\\"\\.\\[\\]";
	var validChars="\[^\\s" + specialChars + "\]";
	var quotedUser="(\"[^\"]*\")";
	var ipDomainPat=/^\[(\d{1,3})\.(\d{1,3})\.(\d{1,3})\.(\d{1,3})\]$/;
	var atom=validChars + '+';
	var word="(" + atom + "|" + quotedUser + ")";
	var userPat=new RegExp("^" + word + "(\\." + word + ")*$");
	var domainPat=new RegExp("^" + atom + "(\\." + atom +")*$");

	var matchArray=emailStr.match(emailPat)
	if (matchArray==null)
	{
		// alert("Email address seems incorrect (check @ and .'s)")
		return false;
	}
	var user=matchArray[1];
	var domain=matchArray[2];

	if (user.match(userPat)==null)
	{
		// alert("The username doesn't seem to be valid.")
		return false;
	}

	var IPArray=domain.match(ipDomainPat);
	if (IPArray!=null)
	{
		for (var i=1;i<=4;i++)
		{
			if (IPArray[i]>255)
			{
				// alert("Destination IP address is invalid!")
				return false;
    		}
   		}
   		return true;
	}

	var domainArray=domain.match(domainPat);
	if (domainArray==null)
	{
		// alert("The domain name doesn't seem to be valid.");
		return false;
	}

	var atomPat=new RegExp(atom,"g");
	var domArr=domain.match(atomPat);
	var len=domArr.length;
	if (domArr[domArr.length-1].length<2 || domArr[domArr.length-1].length>3)
	{
   		// alert("The address must end in a three-letter domain, or two letter country.")
   		return false;
	}

	if (len<2)
	{
   		// var errStr="This address is missing a hostname!";
   		// alert(errStr);
   		return false;
	}

	return true;
}

//Check digit
function isDigit(str)
{
	var ltdArray = new Array("1","2","3","4","5","6","7","8","9","0");
	var ch;
	for(var i=0; i<str.length; i++ )
	{
		var ltdch = false;
		ch = str.substring(i,i+1);
		for(var j in ltdArray)
		{
			if(ch == ltdArray[j])
			{
				ltdch = true;
				break;
			}
			if(j == ltdArray.length)
			{
				break;
			}

		}
		if(!ltdch)
		{
			break;
		}
	}
	return(ltdch);
}

//Check numeric number
function isNum(str)
{
	var ltdArray = new Array("1","2","3","4","5","6","7","8","9","0",".");
	var ch;
	for(var i=0; i<str.length; i++ )
	{
		var ltdch = false;
		ch = str.substring(i,i+1);
		for(var j in ltdArray)
		{
			if(ch == ltdArray[j])
			{
				ltdch = true;
				break;
			}
			if(j == ltdArray.length)
			{
				break;
			}

		}
		if(!ltdch)
		{
			break;
		}
	}
	return(ltdch);
}

//check blank value
function alltrim(str)
{
	var ch;
	var rstr;
	var i = 0;
	while(true)
	{
		ch = str.substring(i,i+1);
		if(ch != " ")
			break;
		i++;
	}
	str = str.substring(i,str.length);
	i = str.length;
	while(true)
	{
		ch = str.substring(i,i-1);
		if(ch != " ")
			break;
		i--;
	}
	str = str.substring(0,i);
	return(str);
}

//Check special charecter
function chkspech(str)
{
	var speArray = new Array("~","!","\\","\"","|");
	var ch;
	var isSpeCh = false;
	for(var i=0;i<str.length;i++)
	{
		ch = str.substring(i,i+1);
		for(var j in speArray)
		{
			if(ch == speArray[j])
			{
				isSpeCh = true;
				break;
			}
		}
		if(isSpeCh)
			break;
	}
	return(isSpeCh);
}

//check digit and a to z charecter
function isAlphaNum(str)
{
	var speArray = new Array("~","`","!","@","#","$","%","^","&","*","(",")","+","=","[","{","]","}",":",";",",","<",">",".","/","?","|","\\","\"");
	var ch;
	var isSpeCh = false;
	for(var i=0;i<str.length;i++)
	{
		ch = str.substring(i,i+1);
		for(var j in speArray)
		{
			if(ch == speArray[j])
			{
				isSpeCh = true;
				break;
			}
		}
		if(isSpeCh)
			break;
	}
	return(!isSpeCh);
}

//check digit , a to z but no Dot(.) charecter
function isAlphaNumDot(str)
{
	var speArray = new Array("~","`","!","@","#","$","%","^","&","*","(",")","+","=","[","{","]","}",":",";",",","<",">","/","?","|","\\","\"");
	var ch;
	var isSpeCh = false;
	for(var i=0;i<str.length;i++)
	{
		ch = str.substring(i,i+1);
		for(var j in speArray)
		{
			if(ch == speArray[j])
			{
				isSpeCh = true;
				break;
			}
		}
		if(isSpeCh)
			break;
	}
	return(!isSpeCh);
}

//check upload file size
function LimitAttach(file)
{
	extArray = new Array(".gif", ".jpg");

	while (file.indexOf("\\") != -1)
	file = file.slice(file.indexOf("\\") + 1);
	ext = file.slice(file.indexOf(".")).toLowerCase();
	for (var i = 0; i < extArray.length; i++)
	{
		if (extArray[i] == ext)
		{
			return true;
		}
	}
	return false;
}

//Date checking
function checkdate1(jopDay,jopMonth,jopYear)
{
	var leapyear,year,month,day;
	for( var i=0;i<5;i++)
	{
		if(jopYear[i].selected)
		{
			year = jopYear[i].text;
			break;
		}
	}

	for( var i=0;i<31;i++)
	{
		if(jopDay[i].selected)
		{
			day = jopDay[i].text;
			break;
		}
	}

	for( var i=0;i<12;i++)
	{
		if(jopMonth[i].selected)
		{
			month = jopMonth[i].text;
			break;
		}
	}

	if(year%4 == 0)
	{
		leapyear = true;
	}

	if(!leapyear && month=="February" && day>28)
	{
		return(false);
	}

	if(leapyear && month=="February" && day>29)
	{
		return(false);
	}

	if(month=="April" || month =="June" || month=="September" || month=="November")
	{
		if( day > 30)
		{
			return(false);
		}
	}
	return(true);
}

function checkdate2(jopDay,jopMon)
{
	var dt = true;
	var day, month;

	for( var i=0;i<31;i++)
	{
		if(jopDay[i].selected)
		{
			day = jopDay[i].text;
			break;
		}
	}

	for( var i=0;i<12;i++)
	{
		if(jopMon[i].selected)
		{
			month = jopMon[i].text;
			break;
		}
	}

	if(month=="February" && day>29)
	{
		dt = false;
	}

	if(month=="April" || month =="June" || month=="September" || month=="November")
	{
		if( day > 30)
		{
			dt = false;
		}
	}
	return(dt);
}

//checking fax
function isFax(str)
{
	var ltdArray = new Array("1","2","3","4","5","6","7","8","9","0"," ","-","(",")");
	var ch;
	for(var i=0; i<str.length; i++ )
	{
		var ltdch = false;
		ch = str.substring(i,i+1);
		for(var j in ltdArray)
		{
			if(ch == ltdArray[j])
			{
				ltdch = true;
				break;
			}
			if(j == ltdArray.length)
			{
				break;
			}

		}
		if(!ltdch)
		{
			break;
		}
	}
	return(ltdch);
}

function comparedate(day1, month1, year1, day2, month2, year2)
{
	var fday,fmonth,fyear,tday,tmonth,tyear;
	for(var i=0;i<4;i++)
	{
		if(year1[i].selected)
		{
			fyear = year1[i].value;
		}
		if(year2[i].selected)
		{
			tyear = year2[i].value;
		}
	}
	for( var i=0;i<31;i++)
	{
		if(day1[i].selected)
		{
			fday = day1[i].value;
		}
		if(day2[i].selected)
		{
			tday = day2[i].value;
		}
	}
	for( var i=0;i<12;i++)
	{
		if(month1[i].selected)
		{
			fmonth = month1[i].text;
		}
		if(month2[i].selected)
		{
			tmonth = month2[i].text;
		}
	}

	var fdatestr = fmonth+ " " + fday +", " + fyear;
	var tdatestr = tmonth+ " " + tday +", " + tyear;
	var fmili = Date.parse(fdatestr);
	var tmili = Date.parse(tdatestr);
	if( fmili >  tmili )
	{
		return (false);
	}
	return(true);
}

function TeleChkspech(str)
{
	var speArray = new Array("~","`","!","@","#","$","%","^","&","*","(",")","+","=","[","{","]","}",":",";","<",">","/","?","|","\\","\"");
	var ch;
	var isSpeCh = false;
	for(var i=0;i<str.length;i++)
	{
		ch = str.substring(i,i+1);
		for(var j in speArray)
		{
			if(ch == speArray[j])
			{
				isSpeCh = true;
				break;
			}
		}
		if(isSpeCh)
			break;
	}
	return(isSpeCh);
}

function  TeleIsNum(str)
{
	var ltdArray = new Array("1","2","3","4","5","6","7","8","9","0","-"," ",".",",");
	var ch;
	for(var i=0; i<str.length; i++ )
	{
		var ltdch = false;
		ch = str.substring(i,i+1);
		for(var j in ltdArray)
		{
			if(ch == ltdArray[j])
			{
				ltdch = true;
				break;
			}
			if(j == ltdArray.length)
			{
				break;
			}
		}
		if(!ltdch)
		{
			break;
		}
	}
	return(ltdch);
}