//useful function that we'll be using throughout
function confirmClick(msg)
{
	var okay=confirm(msg);
	if(okay)
        	return true; 
        else 
		return false;
}

function el(str,domain,name)
{
	document.write('<a href="ma'+'il'+'to:' + str + '@' + domain + '">' + name + '</a>');
}

function em(str,domain)
{
	document.write('<a href="ma'+'il'+'to:' + str + '@' + domain + '">' + str + '@' + domain + '</a>');
}

var anyFieldHasBeenChanged=false;

function fieldChanged()
{
	anyFieldHasBeenChanged=true;
}

function confirmChanges()
{
	if(anyFieldHasBeenChanged)
	{
		var okay=confirm('<?=i18n("You have unsaved changes.  Click \"Cancel\" to return so you can save your changes, or press \"OK\" to discard your changes and continue")?>');
		if(okay)
			return true;
		else
			return false;
	}
	else
		return true;
}

/* Popups using jQuery */
var popup_current = null;
function popup_open(name)
{
	if(popup_current == null) {
		var w = document.documentElement.clientWidth;
		var h = document.documentElement.clientHeight;
		var ph = $("#popup_"+name).height();
		var pw = $("#popup_"+name).width();
		/* Center the popup */
		$("#popup_"+name).css({
			"position": "absolute",
			"top": (h - ph)/2,
			"left": (w - pw)/2
		});

		/* IE6 hack */
		$("#popup_"+name+"_background").css({
			  "height": h
		});

		/* Display the popup */
		$("#popup_"+name+"_background").css({
			"opacity": "0.7"
		});
		$("#popup_"+name+"_background").fadeIn("fast");
		$("#popup_"+name).fadeIn("fast");
		popup_current = name;
	}
}

function popup_close()
{
	//disables popup only if it is enabled
	if(popup_current != null){
		$("#popup_"+popup_current+"_background").fadeOut("fast");
		$("#popup_"+popup_current).fadeOut("fast");
		popup_current = null;
	}
}

/* Hook ESC to cancel a popup */
$(document).keypress(function(e) 
{
	if(e.keyCode==27 && popup_current != null) {
		popup_close();
	}
});


/* Stuff to do after the document loads */
$(document).ready(function() 
{
	/* Hook close buttons on all popups (which may not be defined
	 * until the HTML is finished parsing, so we have to do it
	 * in the document.ready function ) */
	$(".popup_close").click(function()
	{
		popup_close();
	});

});