function doSearch(where, index, str) {
	document.forms.search.action = './'+where+'/page:'+index;
	document.forms.search.s.value = str;
	document.forms.search.submit();
}

function doSubscribe() {
	var regEmail = /^[A-Za-z0-9\-_]+(\.[A-Za-z0-9\-_]+)*@([A-Za-z0-9\-_\.]+\.)+[A-Za-z]{2,8}$/i
	
    if (document.getElementById('mailing').FirmEmail.value < 1) {
			alert("Please enter e-mail address!");
            document.getElementById('mailing').FirmEmail.focus();
            return false;
    } else {
        if (document.getElementById('mailing').FirmEmail.value.search(regEmail) == -1) {
            alert("Please enter valid e-mail address!");
            document.getElementById('mailing').FirmEmail.focus();
            return false;
        }
    }
}

function doRegister() {
	var regEmail = /^[A-Za-z0-9\-_]+(\.[A-Za-z0-9\-_]+)*@([A-Za-z0-9\-_\.]+\.)+[A-Za-z]{2,8}$/i
	
    if (document.getElementById('register_form_firstname').value < 1) {
			alert("Please enter First name!");
            document.getElementById('register_form_firstname').focus();
            return false;
    }
    if (document.getElementById('register_form_surname').value < 1) {
			alert("Please enter Surname!");
            document.getElementById('register_form_surname').focus();
            return false;
    }
    if (document.getElementById('register_form_jobtitle').value < 1) {
			alert("Please enter Job title!");
            document.getElementById('register_form_jobtitle').focus();
            return false;
    }
    if (document.getElementById('register_form_company').value < 1) {
			alert("Please enter Company!");
            document.getElementById('register_form_company').focus();
            return false;
    }
    if (document.getElementById('register_form_address').value < 1) {
			alert("Please enter Address!");
            document.getElementById('register_form_address').focus();
            return false;
    }
    if (document.getElementById('register_form_country').value < 1) {
			alert("Please enter Country!");
            document.getElementById('register_form_country').focus();
            return false;
    }
    if (document.getElementById('register_form_postcode').value < 1) {
			alert("Please enter Postcode!");
            document.getElementById('register_form_postcode').focus();
            return false;
    }
	if (document.getElementById('register_form_email').value < 1) {
			alert("Please enter e-mail address!");
            document.getElementById('register_form_email').focus();
            return false;
    }
    if (document.getElementById('register_form_email').value.search(regEmail) == -1) {
        alert("Please enter valid e-mail address!");
        document.getElementById('register_form_email').focus();
        return false;
    }
    if (document.getElementById('register_form_tel').value < 1) {
			alert("Please enter Telephone!");
            document.getElementById('register_form_tel').focus();
            return false;
    }
}

function doContact() {
    var regEmail = /^[A-Za-z0-9\-_]+(\.[A-Za-z0-9\-_]+)*@([A-Za-z0-9\-_\.]+\.)+[A-Za-z]{2,8}$/i
    
    if (document.getElementById('name').value < 1) {
			alert("Enter field \"Name\"!");
            document.getElementById('name').focus();
            return false;
    }
	
    if (document.getElementById('email').value < 1) {
			alert("Enter field  \"E-mail\"!");
            document.getElementById('email').focus();
            return false;
    } else {
        if (document.getElementById('email').value.search(regEmail) == -1) {
            alert("Please enter valid e-mail!");
            document.getElementById('email').focus();
            return false;
        }
    }
	
	if (document.getElementById('message').value < 1) {
			alert("Enter field  \"Message\"!");
            document.getElementById('message').focus();
            return false;
    }    

}

function doExhibitor() {    
    if (document.exhibitor.company.value < 1) {
			alert("Enter field \"Company name\"!");
            document.exhibitor.company.focus();
            return false;
    }
    if (document.exhibitor.address.value < 1) {
			alert("Enter field \"Address\"!");
            document.exhibitor.address.focus();
            return false;
    }
}

function lightup(imgName) {
	imgOn = eval(imgName + "on.src");
	document.getElementById(imgName).src = imgOn;
}

function turnoff(imgName) {
	imgOff = eval(imgName + "off.src");
	document.getElementById(imgName).src = imgOff;
}

var keyStr = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/=";

function encode64(input) {
   var output = "";
   var chr1, chr2, chr3;
   var enc1, enc2, enc3, enc4;
   var i = 0;

   do {
      chr1 = input.charCodeAt(i++);
      chr2 = input.charCodeAt(i++);
      chr3 = input.charCodeAt(i++);

      enc1 = chr1 >> 2;
      enc2 = ((chr1 & 3) << 4) | (chr2 >> 4);
      enc3 = ((chr2 & 15) << 2) | (chr3 >> 6);
      enc4 = chr3 & 63;

      if (isNaN(chr2)) {
         enc3 = enc4 = 64;
      } else if (isNaN(chr3)) {
         enc4 = 64;
      }

      output = output + keyStr.charAt(enc1) + keyStr.charAt(enc2) + 
         keyStr.charAt(enc3) + keyStr.charAt(enc4);
   } while (i < input.length);
   
   return output;
}

function decode64(input) {
   var output = "";
   var chr1, chr2, chr3;
   var enc1, enc2, enc3, enc4;
   var i = 0;

   // remove all characters that are not A-Z, a-z, 0-9, +, /, or =
   input = input.replace(/[^A-Za-z0-9\+\/\=]/g, "");

   do {
      enc1 = keyStr.indexOf(input.charAt(i++));
      enc2 = keyStr.indexOf(input.charAt(i++));
      enc3 = keyStr.indexOf(input.charAt(i++));
      enc4 = keyStr.indexOf(input.charAt(i++));

      chr1 = (enc1 << 2) | (enc2 >> 4);
      chr2 = ((enc2 & 15) << 4) | (enc3 >> 2);
      chr3 = ((enc3 & 3) << 6) | enc4;

      output = output + String.fromCharCode(chr1);

      if (enc3 != 64) {
         output = output + String.fromCharCode(chr2);
      }
      if (enc4 != 64) {
         output = output + String.fromCharCode(chr3);
      }
   } while (i < input.length);

   return output;
}

function addQuote(id) {
	var comment = document.getElementById('comment');

	comment.innerHTML = '[quote:'+id+']\n';
	comment.focus();
}

function expandcollapse (postid) { 

   whichpost = document.getElementById(postid); 
   
   if (whichpost.className=="postshown") { 
      whichpost.className="posthidden"; 
   } 
   else { 
      whichpost.className="postshown"; 
   } 
}

function doClear(theText) { 
	if (theText.value == theText.defaultValue) { 
		theText.value = "" 
	} 
}