function checkemail(em)

 {

	if(em == '' || em.indexOf('@',0) == -1) return(true);

	if(em.length < 4 || em.indexOf('.',0) == -1) return(true);

	n=em.indexOf('.')

	if(em.length <= n+1) return(true);

}



function trim(string) 

{

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

}



function redirection1()

{

	id = document.formx.brand_id.options[document.formx.brand_id.selectedIndex].value;

	window.location.href = "cigarette_details.php?brand_id="+id;

}



function redirection2()

{

	id = document.formy.brand_id.options[document.formy.brand_id.selectedIndex].value;

	window.location.href = "cigarette_details.php?brand_id="+id;

}



function redirection3()

{

	id = document.formz.brand_id.options[document.formz.brand_id.selectedIndex].value;

	window.location.href = "cigarette_details.php?brand_id="+id;

}



function check_frmlogin()

{

	if(trim(document.form_login.email.value) == "")

	{

		alert("Please enter the email address.");

		document.form_login.email.value = "";

		document.form_login.email.focus();

		return false;

	}

	

	if(checkemail(trim(document.form_login.email.value)) == true)

	{

		alert("Please enter valid email address.");

		document.form_login.email.value = "";

		document.form_login.email.focus();

		return false;

	}

	

	if(trim(document.form_login.password.value) == "")

	{

		alert("Please enter the password.");

		document.form_login.password.value = "";

		document.form_login.password.focus();

		return false;

	}

	

	return true;

}



function check_frmpass()

{

	if(trim(document.form_pass.email.value) == "" )

	{

		alert("Please enter the email address.");

		document.form_pass.email.value = "";

		document.form_pass.email.focus();

		return false;

	}

	if( checkemail(trim(document.form_pass.email.value)) == true)

	{

		alert("Please enter valid email address.");

		document.form_pass.email.value = "";

		document.form_pass.email.focus();

		return false;

	}

	

	

	return true;

}