function control(form_id,name,surname,email,note,captcha_code){
var ret = true;
var v1 = document.forms[form_id].elements[name].value;
var v2 = document.forms[form_id].elements[surname].value;
var v3 = document.forms[form_id].elements[email].value;
var v4 = document.forms[form_id].elements[note].value;
var v5 = document.forms[form_id].elements[captcha_code].value;


if((v1 == '')||(v1 == "undefined")||(v1.length < 3)){
	var temp1 = document.forms[form_id].elements[name];
	temp1.className="error_form";
	ret = false;
}
else{
	var temp1 = document.forms[form_id].elements[name];
	temp1.className="input";
	}

if((v2 == '')||(v2 == "undefined")||(v2.length < 3)){
var temp2 = document.forms[form_id].elements[surname];
temp2.className="error_form";
ret = false;
}
else{
	var temp2 = document.forms[form_id].elements[surname];
	temp2.className="input";
	}
	
	
if((v3 == '')||(v3 == "undefined")||(v3.length < 3)){
var temp3 = document.forms[form_id].elements[email];
temp3.className="error_form";
ret = false;
}
else{
	var temp3 = document.forms[form_id].elements[email];
	var espressione = new RegExp("^[_a-z0-9-]+(\.[_a-z0-9-]+)*@[a-z0-9-]+[\.]([a-z0-9-]+)*([a-z]{2,3})$");
	if ( !espressione.test(v3) )
		temp3.className="error_form";
	else
		temp3.className="input";
	}
		
if((v4 == '')||(v4 == "undefined")||(v4.length > 250) || (v4.length < 10)){
var temp4 = document.forms[form_id].elements[note];
temp4.className="error_form_text";
ret = false;
}
else{
	var temp4 = document.forms[form_id].elements[note];
	temp4.className="input";
	}
		
if((v5 == '')||(v5 == "undefined")||(v5.length < 2)){
var temp5 = document.forms[form_id].elements[captcha_code];
temp5.className="error_form";
ret = false;
}
else{
	var temp5 = document.forms[form_id].elements[captcha_code];
	temp5.className="input";
	}

return ret;
}

function conta(){
	var lenMax=250
	var strlength=document.infoform.note.value.length
	total = eval("250")
	char = eval(document.infoform.note.value.length)
	left = eval(total - char)
	if (left <= "-1")
	{
		var dif = eval(char - 250)
		var value = document.infoform.note.value.substr(0,char-dif);
		document.infoform.note.value = value;
		var left = "0"
	}
	document.infoform.diff.value=left
}