function cheskStr(str)
{

    if ( str != '') { 
	if(str.length<3 || str.length>1024) {
	    alert('check you data');
	    return false;
	}
    }
    else
    {
	alert('enter you data');
	return false;
    }
	
    return true;


}

function checkEmail(p_email)
{

 if (p_email == "") return true;
 
 t = p_email.indexOf("@");

 if((p_email.indexOf(".") == -1) || (t == -1) || (t < 1) || (t > p_email.length - 5) || (p_email.charAt(t - 1) == '.') || (p_email.charAt(t + 1) == '.')) {
     alert("check E-mail");
     return false;
 }

return true; 
}

function check(UserForm)
{

    if (!cheskStr(UserForm.name.value.toString())) return false;
    if (!cheskStr(UserForm.comment.value.toString())) return false;
    if (!checkEmail(UserForm.email.value.toString())) return false;

    return true;
}


function addBookmark(url, title)
{

if (!url) url = location.href;
if (!title) title = document.title;
  
if ((typeof window.sidebar == "object") && (typeof window.sidebar.addPanel == "function")) window.sidebar.addPanel (title, url, "");
else if (typeof window.external == "object") window.external.AddFavorite(url, title);
else if (window.opera && document.createElement)
 {
var a = document.createElement('A');
if (!a) return false; //IF Opera 6
a.setAttribute('rel','sidebar');
a.setAttribute('href',url);
a.setAttribute('title',title);
a.click();
 }
else return false;
return true;
}
        	                        
function AddFavorite (url, title)
{
      if (typeof window.external == "object") { window.external.AddFavorite(url, title); return true; } else return false;
 }
        	                          

function AddSidebarBookmark (url, title)
 {
if ((typeof window.sidebar == "object") && (typeof window.sidebar.addPanel == "function"))
 {
 window.sidebar.addPanel (title, url, "");
return true;
}
else return false;
}