/*check passwords*/
function checkPasswords(pass1,pass2)
{
	 

  // require at least 6 characters in the password field
  if (pass1.value.length < 6)
   {
    alert("Your password should be at least 6 characters long.");
    pass1.focus();
    return false;
   }

  if (pass2.value.length < 6)
   {
    alert("Your password should be at least 6 characters long.");
    pass2.focus();
    return false;
   }
   

// check if both password fields are the same
if (pass1.value != pass2.value)
{
	alert("The two passwords are not identical.");
	pass2.focus();
	return false;
}
  return true;
}



function checkEmptyInput(value,label)
{
	if((value!='')&&(value!=undefined)){
		return true;
	}else{
		alert('Prosím zadejte ' + label );
		return false;
	}
}


function checkemail(str){
var testresults

var filter=/^([\w-]+(?:\.[\w-]+)*)@((?:[\w-]+\.)*\w[\w-]{0,66})\.([a-z]{2,6}(?:\.[a-z]{2})?)$/i
if (filter.test(str))
testresults=true
else{
alert("Prosím zadejte platný email")
testresults=false
}
return (testresults)
}



function checkSelect(value,label)
{
	
	if(value>0){
		return true;
	}else{
		alert('Prosím zadejte ' + label );
		return false;
	}
}


function checkSelect2(value,label)
{

	if(value!="-1"){
		return true;
	}else{
		alert('Prosím zadejte ' + label );
		return false;
	}
}
	

function checkRadio(element,label)
{
	
var ret = false;	
	
 for(i=0;i<=element.length-1;i++)	
  if(element[i].checked==true) ret=true;
  
  if(ret==false) alert('Prosím zadejte ' + label );
  return ret;
}




function passFormSubmit(passengers)
{
	var cont = true;
	for(i=0;i<=passengers-1;i++)
	 {
	  el = eval('document.passForm.pass'+i);
	  if(!checkEmptyInput(el.value,(i+1)+'. '+'cestujícího')) 
     {
      cont=false;
      el.focus();
      i=passengers;//end loop
     }
   }
  
  
  if(cont)
	 if(checkEmptyInput(document.passForm.customer.value,'zákazníka'))
	  {
	      if(checkemail(document.passForm.email.value,'')) document.passForm.submit(); 
        else document.passForm.email.focus();
	  }
	 else document.passForm.customer.focus();
    
}

function contactUsFormSubmit()
{
 
 if(checkemail(document.contact.email.value,''))
  if(checkEmptyInput(document.contact.message.value,'zprávu')) contact.submit();

}

function linksFormSubmit()
{
 
 if(checkemail(document.contact.email.value,''))
  if(checkEmptyInput(document.contact.url.value,'url')) contact.submit();


}