jQuery(function() {
   jQuery('.konkret-wyslij').hover( function(){
      jQuery(this).attr("src", "http://konkretgrupa.pl/wp-content/themes/konkret/image/konkret-box-wyslij-hover.jpg");
   },
   function(){
      jQuery(this).attr("src", "http://konkretgrupa.pl/wp-content/themes/konkret/image/konkret-box-wyslij.jpg");
   });
});

function validate_required(field,alerttxt)
{
with (field) {
	var stripped = value.replace(/[\(\)\.\-\ \+]/g, '');
	if (value==null||value=="") {
		alert(alerttxt);return false;
	} else if (isNaN(stripped)) {
		alert("Numer telefonu zawiera niedozwolone znaki.");return false;
	} else if (stripped.length > 15) {
		alert("Zbyt długi numer telefonu.");return false;
	} else if (stripped.length < 8) {
		alert("Zbyt krótki numer telefonu.");return false;
	} else {
		return true;
	}
}
}

function validate_form(thisform)
{
with (thisform)
  {
  if (validate_required(konkretinput,"Proszę podać numer telefonu")==false)
  {konkretinput.focus();return false;}
  }
}

function validate(form_id,email) {
   var reg = /^([A-Za-z0-9_\-\.])+\@([A-Za-z0-9_\-\.])+\.([A-Za-z]{2,4})$/;
   var address = document.forms[form_id].elements[email].value;
   if(reg.test(address) == false) {
      alert('Nieprawidłowy adres email.');
      return false;
   }
}