$(document).ready(function(){	
	$('#symptom-button img.green').hover(
		function(){
			$(this).attr('src','/images/symptom_button_green_over.png');
		},
		function(){
			$(this).attr('src','/images/symptom_button_green.png');
		}
	);
	$('.symptom-button img.red').hover(
		function(){
			$(this).attr('src','/images/symptom_button_red_over.png');
		},
		function(){
			$(this).attr('src','/images/symptom_button_red.png');
		}
	);
	$('.symptom-button img.blue').hover(
		function(){
			$(this).attr('src','/images/symptom_button_blue_over.png');
		},
		function(){
			$(this).attr('src','/images/symptom_button_blue.png');
		}
	);
	
	$('#self_analysis input[type="radio"]').change(function(){
		$(this).parent().parent().addClass("checked");
	});
});

sfHover = function() {
	var sfEls = document.getElementById("nav").getElementsByTagName("LI");
	for (var i=0; i<sfEls.length; i++) {
		sfEls[i].onmouseover=function() {
			this.className+=" sfhover";
		}
		sfEls[i].onmouseout=function() {
			this.className=this.className.replace(new RegExp(" sfhover\\b"), "");
		}
	}
}
if (window.attachEvent) window.attachEvent("onload", sfHover);