function init() { 
	var display_value = readCookie('JHRightNavOpen'); 
	if(display_value) { change(display_value); } 

}

function change(changeBlock) {
	var knownBlocks=new Array('arthritis', 'backpain', 'depression', 'diabetes', 'digestive', 'healthy', 'heart', 'hypertension', 'lung' , 'memory', 'nutrition', 'prostate', 'vision'); 
	var count = knownBlocks.length;
	for(var i=0; i < count; i++) { 
		var thisBlock = knownBlocks[i];
		if(thisBlock != changeBlock) {
			document.getElementById(thisBlock + '_ctl').style.display = 'none'; 
			document.images[thisBlock].src='/images/closed.gif'; 
		}
	} 

	var currDisplay = document.getElementById(changeBlock + '_ctl').style.display;
	if(currDisplay == 'none') { 
		document.getElementById(changeBlock + '_ctl').style.display = 'block'; 
		createCookie('JHRightNavOpen',changeBlock,1); 
		document.images[changeBlock].src='/images/open.gif';
	} else { 
		document.getElementById(changeBlock + '_ctl').style.display = 'none'; 
		eraseCookie('JHRightNavOpen'); 
		document.images[changeBlock].src='/images/closed.gif'; 
	} 
}

function changeFontSize(newSize) {
	var styleSheet='';
	switch(newSize){
		case 1:
			styleSheet='style1.css';
			break;
		case 2:
			styleSheet='style2.css';
			break;			
		case 3:
			styleSheet='style3.css';
			break;			
		default:
			styleSheet='style1.css';
			break;			
	}
	
	createCookie('JHStyleSheet', styleSheet, 365);
}		

function createCookie(name,value,days) { if (days) { var date = new Date(); date.setTime(date.getTime()+(days*24*60*60*1000)); var expires = "; expires="+date.toGMTString(); } else var expires = ""; document.cookie = name+"="+value+expires+"; path=/"; } 
function readCookie(name) { var nameEQ = name + "="; var ca = document.cookie.split(';'); for(var i=0;i < ca.length;i++) { var c = ca[i]; while (c.charAt(0)==' ') c = c.substring(1,c.length); if (c.indexOf(nameEQ) == 0) return c.substring(nameEQ.length,c.length); } return null; }
function eraseCookie(name) { createCookie(name,"",-1); }