// JavaScript Document

function SizeFont(tp){
	myclass = document.getElementById('ts').getAttribute("class");
	//document.getElementById('ts').setAttribute("class", "news2");
	//alert(document.getElementById('ts').getAttribute("class"));
	if(tp=='larger'){
		if(myclass =='news1'){
			document.getElementById('ts').setAttribute("class", "news2");
		}
		else if(myclass =='news2'){
			document.getElementById('ts').setAttribute("class",  "news3");
		}
		else if(myclass =='news3'){
			document.getElementById('ts').setAttribute("class", "news4");
		}
		else if(myclass =='news4'){
			document.getElementById('ts').setAttribute("class", "news5");
		}
	}
	else{
		if(myclass =='news5'){
			document.getElementById('ts').setAttribute("class", "news4");
		}
		else if(myclass =='news4'){
			document.getElementById('ts').setAttribute("class","news3");
		}
		else if(myclass =='news3'){
			document.getElementById('ts').setAttribute("class",  "news2");
		}
		else if(myclass =='news2'){
			document.getElementById('ts').setAttribute("class",  "news1");
		}	
	}
}

function checkForm(thisform){
	
	error_msg='';
	
	with(thisform){
		
		with('Surname'){
			if (value==null||value==""){
				error_msg = error_msg +  '[Surname] ';
			}
		}

		with ('Firstname'){
			if (value==null||value==""){
				error_msg = error_msg + '[Name] ';
			}
		}
	
		with('email')
		{
			apos=value.indexOf("@");
			dotpos=value.lastIndexOf(".");
			if (apos<1||dotpos-apos<2) { error_msg = error_msg +  '[email] '; }
		}
	}
	
	
	alert(error_msg);
		
	if(error_msg==''){
		return true;
	}
	else{
		document.getElementById('error_div').innerHTML = 'Please fill the following'+ error_msg;
		return false;
	}
	

}

function validate_required(field,alerttxt)
{
with (field)
{
if (value==null||value=="")
  {alert(alerttxt);return false;}
else {return true}
}
}
function validate_form(thisform)
{
	with (thisform)
	{
		if (validate_required(email,"Email must be filled out!")==false)
		  {email.focus();return false;}
		
		
		if (validate_email(email,"Email must be in correct format")==false)
		  {email.focus();return false;}
		
		if (validate_required(Surname,"Last must be filled out!")==false)
		  {Surname.focus();return false;}
	
		if (validate_required(Firstname,"First name must be filled out!")==false)
		  {Firstname.focus();return false;}
	
	}
}

function validate_email(field,alerttxt)
{
	with(field){
	apos=value.indexOf("@");
	dotpos=value.lastIndexOf(".");
		if (apos<1||dotpos-apos<2) 
		  {alert(alerttxt);return false;}
		else {return true;}
	}
}