<!--
// ---------------------------//
// Javascript form validation //
// ---------------------------//


function not_number(x)
{
if (isNaN(x)) {
 alert(" ! Value must be number ! ")
 return ""
 }
else {return x}
}

function valid_ico(x)
{

}

function valid_dic(x)
{

}

function valid_email(x)
{
if ((x.indexOf("@")==-1) || (x.indexOf(".")==-1)) {alert('Wrong format of e-mail adress, "@" or "." is missing !');return ''}
else return x
}

function valid_tel(x)
{
if (x.length > 0)
 {
for (i=0;i<x.length;i++)
    {
         if (isNaN(x.charAt(i))) {
           if  (((x.charAt(i)=='/') || (x.charAt(i)=='\\') || (x.charAt(i)==' '))==false )
              {alert('! invalid format - use:"0123456789 /\\" !');return '';break}
           else return x;
         }
        else return x
    }
  }
 else return ''
}
-->