function validateLoginForm()
{
   	if (document.loginForm.name.value=="") {
		alert("Please enter your User Id");
		document.loginForm.name.focus();
		return false;
	}

   	if (document.loginForm.password.value=="") {
		alert("Please enter password");
		document.loginForm.password.focus();
		return false;
	}
	return true;
}	


function validateUploadForm()
{
   	if (document.uploadForm.name.value=="") {
		alert("Please enter your name");
		document.uploadForm.name.focus();
		return false;
	}

   	if (document.uploadForm.skills.value=="") {
		alert("Please enter Primary skills");
		document.uploadForm.skills.focus();
		return false;
	}
	
	if (document.uploadForm.file.value=="") {
		alert("Please enter file name");
		document.uploadForm.file.focus();
		return false;
	}

	return true;
}	

function validateSpecialCharcter(ctrlname){
  var iChars = "!@#$%^&*()+=-[]\\\';,/{}|\":<>?";
  for (var i = 0; i < ctrlname.value.length; i++) {
	if (iChars.indexOf(ctrlname.value.charAt(i)) != -1) {
	return false;
	}
  }
  return true;
}

function validateFBackForm()
{
   	if (document.feedBackForm.Name.value=="") {
		alert("Please enter your name");
		document.feedBackForm.Name.focus();
		return false;
	}
	if (validateSpecialCharcter(document.feedBackForm.Name) == false) {
		alert ("Special characters are not allowed.\nPlease remove.");
		document.feedBackForm.Name.focus();
		return false;
	}

	if (document.feedBackForm.Email.value=="")	{
		alert("Please enter an Email address");
		document.feedBackForm.Email.focus();
		return false;
   	}
    emailStr=document.feedBackForm.Email.value;
	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("Not a valid Email format");
		document.feedBackForm.Email.focus();
		return false;
	}
	var user=matchArray[1];
	var domain=matchArray[2];
	if (user.match(userPat)==null) {
	    // user is not valid
	    alert("Not a valid Email format");
		document.feedBackForm.Email.focus();
	    return false;
	}
	var IPArray=domain.match(ipDomainPat);
	if (IPArray!=null) {
	  for (var i=1;i<=4;i++)
	  {
	    if (IPArray[i]>255)
	    {
		   alert("Not a valid Email format");
		   document.feedBackForm.Email.focus();
		   return false;
		}
	  }
	    return true;
	}
	var domainArray=domain.match(domainPat);
	if (domainArray==null) {
		alert("Not a valid Email format");
		document.feedBackForm.Email.focus();
		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("Not a valid Email format");
	   document.feedBackForm.Email.focus();
	   return false;
	}
	if (len<2) {
	   alert("Not a valid Email format");
	   document.feedBackForm.Email.focus();
	   return false;
	}

   	if (document.feedBackForm.Subject.value=="") {
		alert("Please enter a subject");
		document.feedBackForm.Subject.focus();
		return false;
   	}
	if (validateSpecialCharcter(document.feedBackForm.Subject) == false) {
		alert ("Special characters are not allowed.\nPlease remove.");
		document.feedBackForm.Subject.focus();
		return false;
	}

	if (document.feedBackForm.Comments.value=="") {
		alert("Please enter your comments");
		document.feedBackForm.Comments.focus();
		return false;
	}
}