function s_get_GET(key)
{
 get = new String(window.location);
 x = get.indexOf('?');
 if(x == -1) return "";

 l = get.length;
 get = get.substr(x+1, l-x);
 l = get.split('&');

    for(i=0; i<l.length; i++)
    {
     get = l[i].split('=');
     if(get[0] == key)
     return get[1];
    }

 return "";
}







function set_picture()
{
 var pic_arr = new Array();

 for(i=1; i<12; i++)
 pic_arr[pic_arr.length] = '/img/gallery/'+i+'.jpg';

 document.img_pic.src = pic_arr[getrandom(pic_arr.length-1)];
}






function getrandom(max_random)
{
 var min_random = 0;

 max_random++;

 var range = max_random - min_random;
 var n=Math.floor(Math.random()*range) + min_random;

 return n;
} 









function set_cookie(name, value, expires)
{
 matches = /^http:\/\/(?:www.)?([^\/\?\&]+)/.exec(location.href);

 path = '/';
 domain = '.'+matches[1];
 secure = '';

 var todaydate=new Date();
 var expdate=new Date(todaydate.getTime()+expires*1000);

 if(expires)
 expires = expdate.toGMTString();

 document.cookie = name + "=" + escape(value) +
 ((expires) ? "; expires=" + expires : "") +
 ((path) ? "; path=" + path : "") +
 ((domain) ? "; domain=" + domain : "") +
 ((secure) ? "; secure" : "");
}






function get_cookie(name)
{
 var cookie = " " + document.cookie;
 var search = " " + name + "=";
 var setStr = null;
 var offset = 0;
 var end = 0;

    if(cookie.length > 0)
    {
     offset = cookie.indexOf(search);

        if(offset != -1)
        {
         offset += search.length;
         end = cookie.indexOf(";", offset)
         if (end == -1)
         end = cookie.length;
         setStr = unescape(cookie.substring(offset, end));
        }
     }


 if(!setStr)
 setStr = '';

 return(setStr);
}











function reset_del()
{
  if(!confirm('Удалить ?'))
  {
   event.returnValue=false;
   event.cancelBubble=true;
  }
}










function getElementNum(form, obj)
{
 var i = 0;

  while(form.elements[i])
  {
   if (form.elements[i] == obj ) return i;
   i++;
  }

 return 0;
}













function check_traffic()
{
  if( !/^\d+$/.test(document.main.traffic.value) )
  {
   alert('в графе <предполагаемое количество переходов> должно быть число');
   return false;
  }

  if( document.main.login.value=="" || document.main.password.value=="" )
  {
   alert('поля <логин> и <пароль> не должны быть пустыми');
   return false;
  }

}