var max_count1 = 300;  
var max_count2 = 250;  
var max_count3 = 150;  

function count(type, num) {
    var err = 0;
    var tmp = 0;
    var max = eval('max_count'+type);
    if (document.getElementById('textarea_name'+type+num) && document.getElementById('textarea_count'+type+num)) {
        tobj = document.getElementById('textarea_name'+type+num);
        cobj = document.getElementById('textarea_count'+type+num);
        tmp = tobj.value.length;
        if (tmp > max) {
            err = 1;
        }
        cobj.innerHTML = tmp+' из '+max+' символов';
        if (err == 1) {
            cobj.style.color = 'red';
        } else {
            cobj.style.color = '';
        }
    }
}