$(document).ready(function() { 

	$('#SignInLink').click( function() { 
 		$('#target').val('recipe');
 		addFade();
		return false;
	}); 

}); 

function DatasetCookbookAdd( node_id ) {
	var s = '<a href="/recipe?cookbook_remove=' + node_id + '" id="RemoveFromCookbook" onclick="DatasetCookbookRemove(' + node_id + '); return false;"><span>Remove from Cookbook</span></a>';
	$.ajax({ url: '/recipe?cookbook_add=' + node_id, complete: function() { $('#CookbookControl' + node_id ).html(s); } }); 
	return false; 
}

function DatasetCookbookRemove( node_id ) {
	var s = '<a href="/recipe?cookbook_add=' + node_id + '" id="AddToCookbook" onclick="DatasetCookbookAdd(' + node_id + '); return false;"><span>Add to Cookbook</span></a>';
	$.ajax({ url: '/recipe?cookbook_remove=' + node_id, complete: function() { $('#CookbookControl' + node_id ).html(s); } }); 
	return false; 
}

function addFade() {
	doBGFade($("#username"),[255,255,100],[255,255,255],[255,255,255],75,20,4);
}

function doBGFade(elem,startRGB,endRGB,finalColor,steps,intervals,powr) {
	if (elem.bgFadeInt) { 
		window.clearInterval(elem.bgFadeInt);
	}
	var actStep = 0;
	elem.bgFadeInt = window.setInterval(
										function() {
											document.getElementById("username").style.backgroundColor = "rgb("+
											easeInOut(startRGB[0],endRGB[0],steps,actStep,powr)+","+
											easeInOut(startRGB[1],endRGB[1],steps,actStep,powr)+","+
											easeInOut(startRGB[2],endRGB[2],steps,actStep,powr)+")";
											actStep++;
											if (actStep > steps) {
												document.getElementById("username").style.backgroundColor = finalColor;
												window.clearInterval(elem.bgFadeInt);
												document.getElementById("username").value='';
												document.getElementById("username").focus();
											}
										}
										,intervals);
}

function easeInOut(minValue,maxValue,totalSteps,actualStep,powr) {
	var delta = maxValue - minValue;
	var stepp = minValue+(Math.pow(((1 / totalSteps)*actualStep),powr)*delta);
	return Math.ceil(stepp);
}