function popupp()
{
	window.open("popup.php",null,"toolbar=no,directories=no,status=no,menubar=no,scrollbars=no,resizable=no,left=50,top=50,width=861,height=670");
}

function valt()
{
	bor = document.getElementById("borfajta");
	kiskep = document.getElementById("kiskep");
	kiskep.src= "/th/" + bor.value + "_th.jpg";
}

function szamol()
{
	ar_ = document.getElementById("ar");
	ara_ = document.getElementById("ara");
	szor_ = document.getElementById("db");
	ar_.value=ara_.value*szor_.value;
}

function maxLength(field,maxChars)
{
       if(field.value.length > maxChars) {
       	field.value = field.value.substring(0, 90);
          return false;
       }
       return true
}

function maxLengthPaste(field,maxChars)
{
       if((field.value.length +  window.clipboardData.getData("Text").length) > maxChars) {
         return false;
         field.value = field.value.substring(0, 90);
       }
       return true;
}