function OnlyNum(e)
{
var keynum;
var keychar;
var numcheck;
var return2;
if(window.event) // IE
{
keynum = e.keyCode;
}
else if(e.which) // Netscape/Firefox/Opera
{
keynum = e.which;
}
keychar = String.fromCharCode(keynum);
if (keynum < 45 || keynum > 57) { // разрешаем только ввод цифр
return2 = false;
if (keynum == 8) return2 = true; // разрешаем нажатие клавиши backspace
}
else return2 = true; 

return return2;
}//OnlyNum

function checknotnull(id){

s = $('#'+id).val();
if (s=="" || s.Length==0) {    
  s=0;
} 
return s;
}//checknotzero


function setbgbutton(id){
  did = document.getElementById(id);
  if (did.className=='button'){
    did.className='abutton';
  }
  else did.className='button';
}

function setbgsbutton(id,p){
  did = document.getElementById(id);
  if (did.className==p+'button'){
    did.className=p+'abutton';
  }
  else did.className=p+'button';
}

function uvsubmenu(k,ctid){
	s = 's'+k+'ct'+ctid;
	x = document.getElementById(s);
	x.innerHTML='<img src="images/adown.jpg" align=center valign=center onclick=\'vsubmenu('+k+','+ctid+')\'>';
	s = 'st'+k+'ct'+ctid;
	x = document.getElementById(s);
	if (x){
		x.style.display='none';
		x.style.visibility='hidden';
	}
}//uvsubmenu

function vsubmenu(k,ctid){
	s = 's'+k+'ct'+ctid;
	x = document.getElementById(s);
	x.innerHTML='<img src="images/aup.jpg" align=center valign=center onclick=\'uvsubmenu('+k+','+ctid+')\'>';
	s = 'st'+k+'ct'+ctid;
	x = document.getElementById(s);
	if (x){
		x.style.display='block';
		x.style.visibility='visible';
	}
}//uvsubmenu