//image cache

home = new Image();
home.src = "images/nav_home.gif";
milestones = new Image();
milestones.src = "images/nav_milestones.gif";
research = new Image();
research.src = "images/nav_research.gif";
areas = new Image();
areas.src = "images/nav_areas.gif";
questions = new Image();
questions.src = "images/nav_questions.gif";
standards = new Image();
standards.src = "images/nav_standards.gif";
information = new Image();
information.src = "images/nav_information.gif";
record = new Image();
record.src = "images/nav_record.gif";
discoveries = new Image();
discoveries.src = "images/subnav_discoveries.gif";
ongoing = new Image();
ongoing.src = "images/subnav_ongoing.gif";
muscula1 = new Image();
muscula1.src = "images/subnav_muscula1.gif";
bcancer = new Image();
bcancer.src = "images/subnav_bcancer.gif";
pcancer = new Image();
pcancer.src = "images/subnav_pcancer.gif";
fibrillation = new Image();
fibrillation.src = "images/subnav_fibrillation.gif";
diabetes = new Image();
diabetes.src = "images/subnav_diabetes.gif";
dysfunction = new Image();
dysfunction.src = "images/subnav_dysfunction.gif";
transplants = new Image();
transplants.src = "images/subnav_transplants.gif";
cardiac = new Image();
cardiac.src = "images/subnav_cardiac.gif";
alzheimers = new Image();
alzheimers.src = "images/subnav_alzheimers.gif";
rubinstein = new Image();
rubinstein.src = "images/subnav_rubinstein.gif";
parkinsons = new Image();
parkinsons.src = "images/subnav_parkinsons.gif";
depression = new Image();
depression.src = "images/subnav_depression.gif";
arrhythmia = new Image();
arrhythmia.src = "images/subnav_arrhythmia.gif";


home_o = new Image();
home_o.src = "images/nav_home_on.gif";
milestones_o = new Image();
milestones_o.src = "images/nav_milestones_on.gif";
research_o = new Image();
research_o.src = "images/nav_research_on.gif";
areas_o = new Image();
areas_o.src = "images/nav_areas_on.gif";
questions_o = new Image();
questions_o.src = "images/nav_questions_on.gif";
standards_o = new Image();
standards_o.src = "images/nav_standards_on.gif";
information_o = new Image();
information_o.src = "images/nav_information_on.gif";
record_o = new Image();
record_o.src = "images/nav_record_on.gif";
discoveries_o = new Image();
discoveries_o.src = "images/subnav_discoveries_on.gif";
ongoing_o = new Image();
ongoing_o.src = "images/subnav_ongoing_on.gif";
muscula1_o = new Image();
muscula1_o.src = "images/subnav_muscula1_on.gif";
bcancer_o = new Image();
bcancer_o.src = "images/subnav_bcancer_on.gif";
pcancer_o = new Image();
pcancer_o.src = "images/subnav_pcancer_on.gif";
fibrillation_o = new Image();
fibrillation_o.src = "images/subnav_fibrillation_on.gif";
diabetes_o = new Image();
diabetes_o.src = "images/subnav_diabetes_on.gif";
dysfunction_o = new Image();
dysfunction_o.src = "images/subnav_dysfunction_on.gif";
transplants_o = new Image();
transplants_o.src = "images/subnav_transplants_on.gif";
cardiac_o = new Image();
cardiac_o.src = "images/subnav_cardiac_on.gif";
alzheimers_o = new Image();
alzheimers_o.src = "images/subnav_alzheimers_on.gif";
rubinstein_o = new Image();
rubinstein_o.src = "images/subnav_rubinstein_on.gif";
parkinsons_o = new Image();
parkinsons_o.src = "images/subnav_parkinsons_on.gif";
depression_o = new Image();
depression_o.src = "images/subnav_depression_on.gif";
arrhythmia_o = new Image();
arrhythmia_o.src = "images/subnav_arrhythmia_on.gif";
//end image cache


function imgRoll(name,o) {
	document.images[name].src = eval(name+o+".src");
	// onmouseover="imgRoll('blah','_o')"
	// onmouseout="imgRoll('blah','')"
	}