i1=new Image();i1.src="images/flags/cz_flag.gif";i1a=new Image();i1a.src="images/flags/czflag.gif";i2=new Image();i2.src="images/flags/usgb_flag.gif";i2a=new Image();i2a.src="images/flags/usgbflag.gif";function Premen(idi,ion){document.images[idi].src=eval(ion+".src")}function onlyint(){     if ((event.keyCode <48) || (event.keyCode >57)) event.returnValue = false;}function check_form(){	f=document.form.email.value;    if((document.form.jmeno.value == "" ||document.form.prijmeni.value == "")& document.form.firma.value == ""){alert("Vyplňte název firmy nebo jméno a příjmení.");return false}    if(document.form.ulice.value == ""){alert("Vyplote ulici.");return false}    if(document.form.mesto.value == ""){alert("Vyplote misto.");return false}    if(document.form.psc.value == ""){alert("Vyplote PSE.");return false}    if(document.form.telefon.value == ""){alert("Vyplote prosím jakýkoliv telefon na vás.");return false}  		if((f=='') || (f.indexOf('@') < 1 || f.indexOf('@') != f.lastIndexOf('@') || f.lastIndexOf('.') < f.lastIndexOf('@')+2  || f.lastIndexOf('.') > (f.length-3) || f.lastIndexOf('.') < (f.length-4)) ){alert("Nesprávný formát emailu");return false}  return true}function swin(location,w,h,jmeno)  {   var p;   p="scrollbars=1,resizable=1,copyhistory,width="+w+",height="+h+",left=0,top=0";   msg=open(location, jmeno, p);  }