function validate_form()
{
	var e=/^[\w\-\.\+]+\@[a-zA-Z0-9\.\-]+\.[a-zA-Z0-9]{2,4}$/;
	var s=/^[0-9]+$/;
	var m=/^[a-z A-z]+$/;
	var invalid=" ";
	
	//Username
	if(document.lform.username.value=="")
	{
		alert("Please enter your username");
		document.lform.username.focus();
		return false;
	}
	else if(!isNaN(document.lform.username.value))
	{
		alert("Enter only characters");
		document.lform.username.focus();
		return false;
	}
	else if(document.lform.username.value.indexOf(invalid)>-1)
	{
		alert("Spaces are not allowed");
		document.lform.username.focus();
		return false;
	}
	
	//password
	else if(document.lform.pwd1.value==""||document.lform.pwd1.value==null)
	{
		alert("Enter password please")
		document.lform.pwd1.value=""
		document.lform.pwd1.focus()
		return false;
	}
	else if (document.lform.pwd1.value.indexOf(invalid) > -1) 
	{
		alert("Sorry, spaces are not allowed.");
		document.lform.pwd1.value=""
		document.lform.pwd1.focus();
		return false;
	}
}
function validate_userform()
{
	var e=/^[\w\-\.\+]+\@[a-zA-Z0-9\.\-]+\.[a-zA-Z0-9]{2,4}$/;
	var s=/^[0-9]+$/;
	var m=/^[a-z A-z]+$/;
	var invalid=" ";
	
	//Username
	if(document.form_log.username.value=="")
	{
		alert("Please enter your username");
		document.form_log.username.focus();
		return false;
	}
	else if(!isNaN(document.form_log.username.value))
	{
		alert("Enter only characters");
		document.form_log.username.focus();
		return false;
	}
	else if(document.form_log.username.value.indexOf(invalid)>-1)
	{
		alert("Spaces are not allowed");
		document.form_log.username.focus();
		return false;
	}
	
	//password
	else if(document.form_log.pwd1.value==""||document.form_log.pwd1.value==null)
	{
		alert("Enter password please")
		document.form_log.pwd1.value=""
		document.form_log.pwd1.focus()
		return false;
	}
	else if (document.form_log.pwd1.value.indexOf(invalid) > -1) 
	{
		alert("Sorry, spaces are not allowed.");
		document.form_log.pwd1.value=""
		document.form_log.pwd1.focus();
		return false;
	}
}