//function to Check Empty
  function IsEmpty(fld,mesg)
  {
  	reg = / /g;
  	str = fld.value;
  	res = str.replace(reg,"");
	reg = /\s/g;
	res = res.replace(reg,"");
  	if(res == "")
  	{
  		alert(mesg);
  		fld.value="";
  		fld.focus();
  		return false;
  	}		
  	return true;
  }

  
//function to Check email
// opt value 0 if mandatory and 1 if not
function CheckEmail(fld,msg,opt)
{
	if(opt=="0" || fld.value!="")
	{
	
	var emailStr=fld.value;
	var checkTLD=1;
	var knownDomsPat=/^(com|net|org|edu|int|mil|gov|arpa|biz|aero|name|coop|info|pro|museum)$/;

	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(msg);
		fld.focus();
		fld.select();
		return false;
	}
	var user=matchArray[1];
	var domain=matchArray[2];

	for (i=0; i<user.length; i++) {
	if (user.charCodeAt(i)>127) {	
	alert(msg);
	fld.focus();
	fld.select();
	return false;
	   }
	}
	for (i=0; i<domain.length; i++) {
	if (domain.charCodeAt(i)>127) {	
	alert(msg);
	fld.focus();
	fld.select();
	return false;
	   }
	}

	// See if "user" is valid 

	if (user.match(userPat)==null) {

	// user is not valid	
	alert(msg);
	fld.focus();
	fld.select();
	return false;
	}

	var IPArray=domain.match(ipDomainPat);
	if (IPArray!=null) 
	{
	for (var i=1;i<=4;i++) {
	if (IPArray[i]>255) {	
	alert(msg);
	fld.focus();
	fld.select();
	return false;
	   }
	}
	return true;
	}


	var atomPat=new RegExp("^" + atom + "$");
	var domArr=domain.split(".");
	var len=domArr.length;
	for (i=0;i<len;i++) {
	if (domArr[i].search(atomPat)==-1) {	
	alert(msg);
	fld.focus();
	fld.select();
	return false;
	   }
	}

	if (checkTLD && domArr[domArr.length-1].length!=2 && 
	domArr[domArr.length-1].search(knownDomsPat)==-1) {	
	alert(msg);
	fld.focus();
	fld.select();
	return false;
	}

	if (len<2) {	
	alert(msg);
	fld.focus();
	fld.select();
	return false;
	}
	return true;
}
return true;
}

//function to Check Phone
function CheckPhone(fld1,fld2,fld3)
{
	if(fld1.value=='')
    {
		alert('Telephone number should be in xxx-xxx-xxxx format only.');
		fld1.focus();
		return false;
	}
    if(isNaN(fld1.value)==true)
    {
		alert('Telephone number could contain numeric values only.');
		fld1.focus();
		return false;
    }
    if(fld1.value.length!=3)
    {
		alert('Telephone number should be in xxx-xxx-xxxx format only.');
		fld1.focus();
		return false;
    }
    if(isNaN(fld2.value)==true)
    {
		alert('Telephone number could contain numeric values only.');
		fld2.focus();
		return false;
    }
	if(fld2.value.length!=3)
	{
		alert('Telephone number should be in xxx-xxx-xxxx format only.');
		fld2.focus();
		return false;
	}
	if(isNaN(fld3.value)==true)
	{
		alert('Telephone number could contain numeric values only.');
		fld3.focus();
		return false;
	}
	if(fld3.value.length!=4)
	{
		alert('Telephone number should be in xxx-xxx-xxxx format only.');
		fld3.focus();
		return false;
	}
	return true;
}

function checkjs()
{
	var js="yes";
	return js;
}


function UserValidation(FRMName)
{
//	alert(FRMName.ftitle.value)
	if(!IsEmpty(FRMName.ffirstname,"Please type your 'First Name' in the space provided"))
	{
		return false;
	};
	if(!IsEmpty(FRMName.flastname,"Please type your 'Last name' in the space provided"))
	{
		return false;
	};
	if(!CheckEmail(FRMName.femail,"Please type a valid 'Email address' in the space provided",0))
	{
		return false;
	};
	if(!IsEmpty(FRMName.fpassword,"Please type your 'Password' in the space provided."))
	{
		return false;
	};
	if(!IsEmpty(FRMName.fconfirm,"Please confirm your password in the space provided."))
	{
		return false;
	};

	if(FRMName.fpassword.value != FRMName.fconfirm.value)
	{
		alert("The password entered in the 'Confirm Password' field does \nnot match your password; if necessary, please re-type \nyour password and confirm in the spaces provided.")

		return false;
	};
	if(!IsEmpty(FRMName.freminder,"Please type your 'Password Reminder' in the space provided."))
	{
		return false;
	};

	if(!IsEmpty(FRMName.fjob,"Please type your 'Job title' in the space provided'"))
	{
		return false;
	};
	if(!IsEmpty(FRMName.forganisation,"Please type your 'Organisation' in the space provided"))
	{
		return false;
	};
	if(!IsEmpty(FRMName.ftel,"Please type your 'Telephone Number' in the space provided"))
	{
		return false;
	};
}

function userLoginValidate(FRMName)
{

	if(!IsEmpty(FRMName.femail,"Please enter your 'username' in the space provided."))
	{
		return false;
	};

	if(!CheckEmail(FRMName.femail,"Please type a valid 'Email address' in the space provided",0))
	{
		return false;
	};

	if(!IsEmpty(FRMName.fpassword,"Please enter your 'Password' in the space provided."))
	{
		return false;
	};

}

function CheckUrl(fld,mesg)
{
 	if(fld.value.indexOf("http://")==-1 || fld.value.indexOf(".")==-1)
 	{
		alert(mesg);
		fld.focus();
		fld.select();
 		return false;
	}
	return true;
}    


// validFileFormat=/(.gif|.GIF|.jpg|.JPG|.jpeg|.JPEG|.png|.PNG)$/;
function IsValidFileFormat(fld, validFileFormat, mesg)
{
	if(!validFileFormat.test(fld.value))
	{
		alert(mesg);
		fld.focus();
		fld.select();
		return false;
	}

	return true;
} 

/*
	This function get confirmation from user
*/
function be_confirm(warning)
{
	option=window.confirm(warning)
	if(option)
	{}
	else
	{
		window.event.returnValue=false
	}
}

/*
	This function to open popup window
*/
function openwin(url,w,h,scrollyes)
{
	if(w== "" && h== "")
	{
	   w = "120";
	   h = "120";
	}
	var top = (screen.height-h)/2;
	var left = (screen.width-w)/2;
	var customize = "toolbar=no,menubar=no,resizable=no,scrollbars="+scrollyes+",width="+w+",height="+h+",top="+top+",left="+left;
	window.open(url,'_blank',customize)
}

//function to Check Number
  function IsNumber(fld,mesg)
  {
	reg = / /g;
  	str = fld.value;
  	res = str.replace(reg,"");
	reg = /\s/g;
	res = res.replace(reg,"");

  	if(res == "" || isNaN(res))
  	{
  		alert(mesg);
  		fld.select();
  		fld.focus();
  		return false;
  	}		
  	return true;
  }

function checkFile(frm)
    {
       if(resume.value == "" || resume.value == null) 
       {
          alert("Please select a file to upload");
          
          resume.focus();
          resume.select();
          return false;
       } 
       else 
       {
          validformFile = /(.doc|.DOC|.pdf|.PDF|.rtf|.RTF.|.zip|.ZIP|.txt|.TXT)$/;

          if(!validformFile.test(resume.value))
          {
              alert("Only .doc, .rtf, .pdf, .zip, .txt are supported");
              resume.focus();
              resume.select();
              return false;
          }
      }
     return true;
    }