function emailValidator(elem){
var emailExp = /^[\w\-\.\+]+\@[a-zA-Z0-9\.\-]+\.[a-zA-z0-9]{2,4}$/i;
if(emailExp.test(elem.value)){
return true;
}else{
return false;
}
} 

function contact(){
var dobry=true;

if(!emailValidator(document.contact_form.email)) 
	{
	document.contact_form.email.style.background="#ff5e2a";
	dobry=false;
	}
	else
	{
	document.contact_form.email.style.background="#f3ffc4"; 
	dobry=true;
	if (document.contact_form.content.value.trim()=="") 
		{
		document.contact_form.content.style.background="#ff5e2a"; 
		dobry=false;
		}
		else 
		{
		document.contact_form.content.style.background="#f3ffc4"; 
		dobry=true;
		if (document.contact_form.token.value.trim()=="") 
			{
			document.contact_form.token.style.background="#ff5e2a";
			dobry=false;
			}
			else 
			{
			document.contact_form.token.style.background="#f3ffc4"; 
			dobry=true;
			}
		}
	}
return dobry;
}