function niepuste(x){return x>'' && x!='wybierz'}

function ismail(e){return /^[\w\.-]{2,}@[\w\.-]+\.[a-z]{2,5}$/i.test(e)}

function validate(f,v,a,x){
 for(a=0;x=f[a++];)
  if((v=window[x.getAttribute('valid')])&&!v(x.value))
   {alert(x.getAttribute('alert'));return!x.focus()}
}

function menuOn(td)
{
	td.parentElement.bgColor='#FFFFFF';
}

function menuOff(td)
{
	td.parentElement.bgColor='#EDEDED';
}

function menu2On(td)
{
	td.parentElement.bgColor='#FFFFFF';
}

function menu2Off(td)
{
	td.parentElement.bgColor='#CADEFF';
}

function showimage(url, width, height)
{
 var Win = window.open(url,"displayWindow",'width=' + width + ',height=' + height + ',resizable=0,scrollbars=no,menubar=no');
}

function show(url, width, height)
{
 var Win = window.open(url,"displayWindow",'width=' + width + ',height=' + height + ',resizable=0,scrollbars=yes,menubar=no');
}