function rot13 (string) {
  var aCode = 'a'.charCodeAt();
  var zCode = 'z'.charCodeAt();
  var ACode = 'A'.charCodeAt();
  var ZCode = 'Z'.charCodeAt();
  var result = '';
  for (var c = 0; c < string.length; c++) {
    var charCode = string.charCodeAt(c);
    if (charCode >= aCode && charCode <= zCode)
      charCode = aCode + (charCode - aCode + 13) % 26;
    else if (charCode >= ACode && charCode <= ZCode)
      charCode = ACode + (charCode - ACode + 13) % 26;
    result += String.fromCharCode(charCode);
  }
  return result;
}

// >

function write_rot13(string){ document.write(rot13(string)); }



function ematch(email,empty_ok)
{
	if(empty_ok!='' && email == '')
	{
		return true;
	}

	var email_ok = email.match(/^[0-9a-z_\-\.]+@[0-9a-z_\-\.]+\.[0-9a-z_\-\.]{2,3}$/i);

	return email_ok;
}

function search_page(sp_id)
{
	var url = "/index.php";
	var spform = document.getElementById("spform");
	var sp_url = document.getElementById(sp_id);

	if(typeof sp_url!='undefined')
	{
		url = sp_url.value;
	}

	spform.action = url;
	spform.submit();
}

function window_status(txt)
{
	if(typeof txt=='undefined')
	{
		txt = '';
	}

	window.status = txt;
	return true;
}

function constrain_textarea(e, textarea, maxrows) 
{
	var keynum = false;
	var fieldname = textarea.name;
	var fieldvalue= textarea.value;

	if(!e)
	{
		e = window.event;
	}

	try {
		keynum = e.keyCode;
	} catch(ev) {
		keynum = e.which;
	}


	if(maxrows!='' || maxrows!=0)
	{			
		var rowcount = fieldvalue.split('\n').length;

   		if ( rowcount < maxrows ) 
    	{
    		return true;
    
    	} else {
		
			if(keynum==13)
			{
				textarea.selected = false;
				return false;
			}
		}
	}
}

// >

function quicklinkhover( divObj,divObjID,showhide )
{
	var linktag_id = divObjID + "_linktag";
	var linktagObj = document.getElementById( linktag_id );
	
	var bgcolor = "#003d78";
	var fgcolor = "#ffffff";
		
	if(!showhide)
	{
		bgcolor = "#ffffff";	
		fgcolor = "#003d78";
	}
	
	divObj.style.backgroundColor = bgcolor;
	linktagObj.style.color = fgcolor;
}

function iconMouseOn ( imgObj, imgName )
{
	var left = imgName.split(".");
	imgObj.src = "/images/"+left+"-on.gif";
}

function iconMouseOut ( imgObj, imgName )
{
	var left = imgName.split("-");
	imgObj.src = "/images/"+left+".gif";
}

function applyConfirm () {
	var popup_box = confirm("You are about to apply for this gig.\n\nYou will not be able to undo this action!");
	return popup_box;
}

function bookConfirm () {
	var popup_box = confirm("You are about to book this gig.\n\nYou will not be able to undo this action without directly contacting the artist!");
	return popup_box;
}

function newBookConfirm (linkObj) {
	var popup_box = confirm("You are about to book this gig.\n\nYou will not be able to undo this action without directly contacting the artist!");
	
	if (popup_box) linkObj.parentNode.submit();
	
	return false;
}

function moveCalendar(imgId, direction) {
	var parentDiv = document.getElementById('calTab' + imgId);
	
	var nextDiv = document.getElementById('calTab' + (imgId + direction));
	
//	if (direction < 0) {
//		nextDiv = parentDiv.previousSibling.previousSibling;
//	} else if (direction > 0) {
//		nextDiv = parentDiv.nextSibling.nextSibling;
//	} else {
//		return;
//	}
	
	parentDiv.style.display = "none";
	
	nextDiv.style.display = "block";	
}

//*** Pop-up windows

function pop_captchaexp()
{
	 window.open("/popup_captchaexplain.php", "captcha_explain", "left=15, top=10, width=450, height=270, status=no, toolbar=no, location=no, menubar=no, directories=no, resizeable=no, scrollbars=no");
}

function pop_clickexp()
{
	 window.open("/popup_multiclickexplain.php", "multiclicklike_explain", "left=15, top=10, width=450, height=270, status=no, toolbar=no, location=no, menubar=no, directories=no, resizeable=no, scrollbars=no");
}

function pop_tc()
{
	window.open("popup_termsofservice.php","member_clickwrap","width=500,height=650,location=no,toolbar=no,resizeable=yes,status=no,menubar=no,scrollbars=yes,titlebar=yes,top=15,left=15");
}

function pop_invkeyexp()
{
	 window.open("/popup_invkeyexplain.php", "invkey_explain", "left=15, top=10, width=450, height=270, status=no, toolbar=no, location=no, menubar=no, directories=no, resizeable=no, scrollbars=no");
}

function genremax(selObj,maxCount)
{
	var curSelCount = 0; var option_disabled = false; var option_color = "#000000";
	for (var i=selObj.options.length-1; i >= 0;i--)
	{
		if (selObj.options[i].selected) { curSelCount++; }
	}

	if( curSelCount >= maxCount )
	{
		option_disabled = true;
		option_color = "#e8e8e8";
	}

	var i_selected = 0;

	for (var i=selObj.options.length-1; i >= 0;i--)
	{
		if(selObj.options[i].selected)
		{
			i_selected++;

			//for ie
			if(selObj.options[i].disabled){ selObj.options[i].selected = false; }
		}

		if(!selObj.options[i].selected || i_selected > maxCount)
		{
			selObj.options[i].selected = false;
			try{ selObj.options[i].disabled = option_disabled; } catch(e){}
			selObj.options[i].style.color = option_color;
		}
	}

	if( option_disabled ){ return false; } return true;
}