function emailCheck(s1) {
emailStr=s1;

		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
		}
return true;
}
function LTrim(str){
	if (str==null){return null;}
	for(var i=0;str.charAt(i)==" ";i++);
	return str.substring(i,str.length);
	}
function RTrim(str){
	if (str==null){return null;}
	for(var i=str.length-1;str.charAt(i)==" ";i--);
	return str.substring(0,i+1);
	}
function Trim(str){return LTrim(RTrim(str));}

function chkvalue()
{
	/*
	if(document.frm.cmbTitle.value=="")
	{
		alert("Please select Title.");
		document.frm.cmbTitle.focus();
		return false;
	}
	*/
	if(Trim(document.frm.txtFirstName.value) == "")
	{
		alert("Please enter First Name.");
		document.frm.txtFirstName.focus();
		return false;
	}
	if(Trim(document.frm.txtLastName.value) == "")
	{
		alert("Please enter Last Name.");
		document.frm.txtLastName.focus();
		return false;
	}
	if(Trim(document.frm.txtEmail.value) == "")
	{
		alert("Please enter Email Address.");
		document.frm.txtEmail.focus();
		return false;
	}
	if(!emailCheck(document.frm.txtEmail.value))
	{
			document.frm.txtEmail.focus();
			return false;
	}
	/*
	if(emailcheck(document.frm.txtEmail.value))
	{
		alert("Please enter valid Email Address.");
		document.frm.txtEmail.focus();
		return false;
	}
	*/
	if(Trim(document.frm.txtContactno.value) == "")
	{
		alert("Please enter your Contact Number.");
		document.frm.txtContactno.focus();
		return false;
	}
	if(isNaN(document.frm.txtContactno.value))
	{
		alert("Please enter valid Contact Number.");
		document.frm.txtContactno.focus();
		return false;
	}
	if(Trim(document.frm.txtEnquiryQuestion.value) == "")
	{
		alert("Please enter Enquiry Question.");
		document.frm.txtEnquiryQuestion.focus();
		return false;
	}
	if(document.frm.cmbAboutus.value == "")
	{
		alert("Please tell us from where did youhear about us.");
		document.frm.cmbAboutus.focus();
		return false;
	}
	if(Trim(document.frm.cmbAboutus.value).toLowerCase() == "google")
	{
		if(Trim(document.frm.txtGoogleValue.value).toLowerCase() == "")
		{
			alert("Please enter the search term you entered in google");
			document.frm.txtGoogleValue.focus();
			return false;
		}
	}
return true;
}