function clearName(textInput){
      if (textInput.value == 'Enter Name')
         textInput.value = '';
   }
   function fillName(textInput){
      if (textInput.value == '')
         textInput.value = 'Enter Name';
   }
   function clearEmail(textinput){
      if (textinput.value == 'Enter Email')
         textinput.value = '';
   }
   function fillEmail(textinput){
      if (textinput.value == '')
         textinput.value = 'Enter Email';
   }
	function emailCheck (emailStr) {
		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) {
			return false;
		}
		var user=matchArray[1];
		var domain=matchArray[2];
		for (i=0; i<user.length; i++) {
			if (user.charCodeAt(i)>127) {
				return false;
		  }
		}
		for (i=0; i<domain.length; i++) {
			if (domain.charCodeAt(i)>127) {
				return false;
		  }
		}
		if (user.match(userPat)==null) {
			return false;
		}
		var IPArray=domain.match(ipDomainPat);
		if (IPArray!=null) {
			for (var i=1;i<=4;i++) {
				if (IPArray[i]>255) {
					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) {
				return false;
		   }
		}
		if (checkTLD && domArr[domArr.length-1].length!=2 && domArr[domArr.length-1].search(knownDomsPat)==-1) {
			return false;
		}
		if (len<2) {
			return false;
		}
		return true;
	}
	function checkdata(){
		var TheForm=document.Add_user;
		var errormsg="";
		if((TheForm.Name.value=="")||(TheForm.Name.value=="Enter Name")){
			errormsg+="Please enter your name.\n";
		}
		if((TheForm.Email.value=="")||(TheForm.Email.value=="Enter Email")){
			errormsg+="Please enter your email.\n";
		}else{
			iEmail=TheForm.Email.value;
			iCheckEmail=emailCheck(iEmail)
			if(!iCheckEmail) {
				errormsg += "Please check your email.\n";
			}
		}
		if(errormsg.length>0){
			alert(errormsg);
			return false;
		}
	}