function trim( value ) 
{
	return value.replace(/^\s+|\s+$/, '');
}

function setSite(start_name, start_site)
{
	myvalue = trim(start_name.value);
	start_site.value = myvalue.replace(/\s+/, '_');
	
	return true;
}

function checkPrijavu(form)
{
	email_text	= trim(form.start_email.value);
	name_text		= trim(form.start_name.value);
	site_text		= trim(form.start_site.value);

	if(email_text.length==0){
		alert( "Morate uneti email radi registracije." );
		form.start_email.focus();
		
		return false;
	}

	var regex=/^([0-9a-zA-Z]([-.\w]*[0-9a-zA-Z])*@([0-9a-zA-Z][-\w]*[0-9a-zA-Z]\.)+[a-zA-Z]{2,9})$/;
	if(regex.test(email_text)==false){
		alert( "Unet e-mail nije ispravan, unesite isprava." );
		form.start_email.focus();

		return false;
	}
	
	if(name_text.length<5){
		alert( "Naziv kluba mora da ima preko 5 karaktera." );
		form.start_name.focus();
		
		return false;
	}
	
	if(site_text.length<5){
		alert( "Naziv sajta mora da ima preko 5 karaktera." );
		form.start_site.focus();
		
		return false;
	}
	
	return true;
}