function isText(str)

{

	var i=0;

	if(str.charAt(0)==' ')i++;

	while(i<str.length)

	{

		if (str.charAt(i)>='0' && str.charAt(i)<= '9' || str.charAt(i)=='+' || str.charAt(i)=='-' || str.charAt(i)=='*' || str.charAt(i)=='/' || str.charAt(i)=='\\' || str.charAt(i)=='\'' || str.charAt(i)=='@' || str.charAt(i)=='!' || str.charAt(i)=='~' || str.charAt(i)=='`' || str.charAt(i)=='#' || str.charAt(i)=='$' || str.charAt(i)=='%' || str.charAt(i)=='^' || str.charAt(i)=='&' || str.charAt(i)=='(' || str.charAt(i)==')' || str.charAt(i)=='_' || str.charAt(i)=='=' || str.charAt(i)=='?' || str.charAt(i)=='.' || str.charAt(i)==',' || str.charAt(i)==';' || str.charAt(i)==':' || str.charAt(i)=='"' || str.charAt(i)=='{' || str.charAt(i)=='}' || str.charAt(i)=='[' || str.charAt(i)==']' || str.charAt(i)=='<' || str.charAt(i)=='>' || str.charAt(i)=='|')

		return false;

		i++;

	}

	return true;

}



// Check Phone Number or not

function isTelephoneNumber(str)

{

	var i=0;

	if(str.charAt(0)=='+')i++;

	while(i<str.length)

	{

		if (!(str.charAt(i)>='0' && str.charAt(i)<= '9' || str.charAt(i)==' ' || str.charAt(i)=='-' || str.charAt(i)=='(' || str.charAt(i)==')') )

			return false;

		i++;

	}

	return true;

}



// Check Phone Number length

function isLength(str)

{

	var len=str.length;

		if(len<10)

		{

			return false;

		}

		return true;

}



// Check Number or Not

function isNumeric(str)

{

	var i=0;

	while(i<str.length)

	{

		if (!(str.charAt(i)>='0' && str.charAt(i)<= '9' || str.charAt(i)==' '))

		return false;

		i++;

	}

	return true;

}



// Remove the empty space

function trim(String)

{

   if (String == null)

   {   

   	return ("");

   }

   return String.replace(/(^\s+)|(\s+$)/g,"");

}



// Check the E-Mail Id

function isMailid(str) 

{

	var emailPat = /^[\w-\.]+\@[\w\.-]+\.[a-z]{2,4}$/;

	var matchArray = str.match(emailPat);

		if (matchArray == null)

		{

		alert("Invalid E-Mail Address");

		return false;

		}

}



function formCarrier()

{

	document.carrier.name.value=trim(document.carrier.name.value);

	name=document.carrier.name.value;

	if (document.carrier.name.value=="")

	{

		alert("Enter Your Name");		

		document.carrier.name.focus();		

		return false;

	}

	else

		if(!isText(name))

		{

			alert("Check Your Name");

			document.carrier.name.focus();

			return false;

		}

		

		

	phone=trim(document.carrier.phone.value);

	mobile=trim(document.carrier.mobileno.value);

	if (((phone==null)||(phone=="")) && ((mobile==null) || (mobile=="")))

	{

		//document.carrier.ph.value="?";

		alert("Enter Contact Phone No or Mobile No")

		document.carrier.phone.focus()

		return false

	}

	if(!isTelephoneNumber(document.carrier.mobileno.value))

		{

			alert("Check Contact mobile No");

			document.carrier.mobileno.focus();

			return false;

		}



	document.carrier.email.value=trim(document.carrier.email.value);

	email=trim(document.carrier.email.value);

	if ((email==null)||(email==""))

	{

		alert("Enter E-Mail Address")

		document.carrier.email.focus()

		return false

	}

	if (isMailid(email)==false)

	{

		document.carrier.email.focus()

		return false

	}



	filename=document.carrier.upload.value;

	if (filename!="")

	{

  	 	var dot = filename.lastIndexOf("."); 

		 if( dot == -1 ) return ""; 

		 	var extension = filename.substr(dot,filename.length); 

	 	 if(extension==".doc" || extension==".rtf" || extension==".pdf")

			return true;

		else

		{

			alert("Your resume should be doc or rtf or pdf file format only");

			 return false;		

		}

	}

	return true;

}