function checkForm(){
	if(frmcombo.email.value =="")
	{
		frmcombo.email.focus();
		alert("Please enter email");
		return (false);
	}
	else if(!check_email(frmcombo.email.value))
	{
		frmcombo.email.value=="";
		frmcombo.email.focus();
		alert("Please Enter Correct email Address");
		return (false);
	}	
	else if(frmcombo.Pass.value =="")
	{
		frmcombo.Pass.focus();
		alert("Please enter Password");
		return (false);
	}
	else if(frmcombo.Pass.value.length <4)
	{
		frmcombo.Pass.focus();
		alert("Password Must Be of Four Digits");
		return (false);
	}					
	return (true);
}

function check_email(e)
 {
	ok = "1234567890qwertyuiop[]asdfghjklzxcvbnm.@-_QWERTYUIOPASDFGHJKLZXCVBNM";
	
	for(i=0; i < e.length ;i++)
	{
		if(ok.indexOf(e.charAt(i))<0)
		{ 
			return (false);
		}	
	} 
}