function ClientValidateEmail(source, clientside_arguments)
{         
    if (/^\w+([\.-]?\w+)*@\w+([\.-]?\w+)*(\.\w{2,3})+$/.test(clientside_arguments.Value)) 
        clientside_arguments.IsValid=true;   
    else {clientside_arguments.IsValid=false};
}

function calcHeight(the_iframe)
{
    if (document.getElementById(the_iframe).style.display != 'none')
    {
        try
        {
            var the_height=document.getElementById(the_iframe).contentWindow.document.body.scrollHeight;
            document.getElementById(the_iframe).style.height=the_height+20;
        } catch(err) {}
    }
} 

function openpicwin(poz)
{if(poz=="") return false;window.open(poz,'Reference','width=800,height=600,scrollbars=yes,resizable=1');}