// javascript function library for carolwhiteart.com
//
// changegallery(newgallery)
// 		Update gallery color backgrounds to reflect current library.
//		Display current gallery images in porfoliobox container.
//
//		arguments:	newgallery - string (1-5) for gallery to display
//		globals:	curgallery - string (1-5) for current gallery displayed
//		returns:	nothing
//
function changegallery(newgallery) {
	
		for (i=1; i<6; i++) {	// update color backgrounds of gallery images
			
			var galleryid = 'gallery' + i;
			var galleryelement = document.getElementById(galleryid);
			
			if (i == newgallery) {			
				galleryelement.className = 'thisgallery';
			}
			else {
				galleryelement.className = 'notthisgallery';
			}
		}
		var portboxelement = document.getElementById('portfoliobox');	// replace the html for the new gallery

		var portboxhtml = '';
		
}
//
// Show and hide elements
//
function showBubble(whichBubble) {
	if (document.getElementById(whichBubble)) {
				document.getElementById(whichBubble).style.display = 'block';
	}
}
function hideBubble(whichBubble) {
	if (document.getElementById(whichBubble)) {
				document.getElementById(whichBubble).style.display = 'none';
	}
}
// display appropriate fields based on dropdown menu choice
//		uses showBubble and hideBubble to turn field off and on
function showfields(choices) {
	whichfields = choices.options[choices.selectedIndex].value;
	if ((whichfields == 0) || (whichfields == "")) {
			hideBubble('subscriberdata');
	}
	else {
			showBubble('subscriberdata');
	}
}
// select option to jump to new page
function jumpPage(newLoc) {
	newPage = newLoc.options[newLoc.selectedIndex].value;
	if (newPage != "") {
		window.location = newPage;
	}
}

//
//
//
// Useful js for coming features
// show photo album 
function showphotos(album) {
	var albumurl = album.options[album.selectedIndex].value;
	if (albumurl != "") {
		newwindow(albumurl,'photoalbum','width=900, height=600,resizable=1, scrollbars=1, statusbar=0');
	}
}
// open a new window
function newwindow(windowurl, windowname, windowparams) {
	var nwindow = window.open(windowurl, windowname, windowparams);
}
function checkPartForm (theForm) {
	var why = "";
    why += checkEmail(theForm.parishioner.value); //should be .email. 
    if (why != "") {
       alert(why);
       return false;
    }
return true;
}
//new version
function checkSender(theform) {
	return checkEmail(theform.sender.value);
}
function checkEmail (strng) {
	var okay=false;
	if ((strng == "") || (strng == "Enter your email address here.")) {
	   alert("You didn't enter an email address.");
	}
	else {
		var emailFilter=/^.+@.+\..{2,3}$/;
		if (!(emailFilter.test(strng))) { 
		   alert("Please enter a valid email address.");
		}
		else {
	//test email for illegal characters
		   var illegalChars= /[\(\)\<\>\,\;\:\\\"\[\]]/
			if (strng.match(illegalChars)) {
			  alert("The email address contains illegal characters.");
		   }
		   else {
			   okay = true;
		   }
		}
	}
	return okay;    
}