//-------funkce omezujici vstupni pole jen na cisla--------------------
function ControlNumber(e){
	var keynum
	var keychar
	var numcheck
	
	if(window.event){
		keynum = e.keyCode
	}	else if(e.which){
		keynum = e.which
	}

	return ((keynum >= 48) && (keynum <= 57)) || keynum == 8 || keynum == 13
}
//----kontrola telefonu
function ControlTel(e){
	var keynum
	var keychar
	var numcheck
	
	if(window.event){
		keynum = e.keyCode
	}	else if(e.which){
		keynum = e.which
	}
	return ((keynum >= 48) && (keynum <= 57)) || keynum == 8 || keynum == 13 || keynum == 32|| keynum == 43
}



//-----------------------------------


//--------------funkce chytajici stisknute klavesy v okne hledani reagujici na enter------------
function kp(e){
   if(window.event){
		    keynum = e.keyCode
	 }else if(e.which){
		    keynum = e.which
	 }	  
   if(keynum==13){
      enterPressed();         //content=document.getElementById('search').value;        // self.location.href='http://www.keafood.eu/krmivo.php?co='+content;
   }
}
/*
function submitSearch(){
     content=document.getElementById('search').value;
     self.location.href='http://www.keafood.eu/krmivo.php?co='+content;
}
///-------funkce chytajici focus na login formu a odstranuje ilustracni hodnoty-----------
function searchFocus(field, compare){
	       content=document.getElementById(field).value;
 	       if(content==compare){
             document.getElementById(field).value='';
           }
}
//-------jdi na link------
function jdiNa(link){
   location.href=link;
}
*/


   function preloadImages(image_url){
      preload_image_object = new Image();
    //   var i = 0;
       for(i=0; i<image_url.length; i++) {
         preload_image_object.src = image_url[i];
    }

  }
  function ControlMail(adresa){
    re = /^[^.]+(\.[^.]+)*@([^.]+[.])+[a-z]{2,5}$/;
    return adresa.search(re) == 0;
}