function onCheck()
{
var err = "";
var form = document.forms["toolform"];
var deep = Number(form.elements.deep.value);
var querys = form.elements.query_list.value;

	if(isNaN(deep))
	err += "'deep' is not a number <br>";
	else if(deep > 100)
	err += "Value 'deep' can not be more than 100 <br>";

	if(querys == "")
	err += "Enter your queries, please <br>";
	else if(line_count(querys) > 10)
		err += "Number of requests should not exceed 10 <br>";
		
	if(err != "")
	setErrors(err);
	else
	form.submit();
}

function line_count(querys)
{
var c = 1;
var q = querys;
	while((pos=q.indexOf("\n")) != -1)
	{
	c++;
	q = q.substr(pos+1);
	}
return c;
}

	/*Устанавливает сообщение об ошибке в спец div*/
function setErrors(err)
{
var err_div = document.getElementById("errors");
err_div.innerHTML = "<p>" + err + "</p>";
err_div.style.display="block";
}

	/*Устанавливает информацию пользователю в спец div*/
function setInfo(info)
{
var info_div = document.getElementById("info");
info_div.innerHTML = "<p>" + info + "</p>";
info_div.style.display="block";
}

function unsetInfo()
{
var info_div = document.getElementById("info");
info_div.innerHTML = "";
info_div.style.display="none";
}