if (servername == null){
	var servername="";
}
//increases and decreases the text size by switching style sheets
var typeState = "0";
var ssName = servername + "/css/home.css";
typeCookie = document.cookie;
strBegin = typeCookie.indexOf("largeFonts=");
if (strBegin >= 0){
	typePref = typeCookie.substring((strBegin + 11), (strBegin + 12));
	if (typePref == "1"){
		ssName = servername + "/css/lgstyle.css";
		typeState = "1";
   	}	
}
else{
   document.cookie = "largeFonts=0;path=/";
}
document.write('<link href="'+ssName+'" rel="stylesheet" type="text/css">');

//increases the text size by switching style sheets
function increaseFontSize(){
	ssName = servername + "/css/lgstyle.css";
	typeState = "1";
	document.cookie = "largeFonts="+typeState+";path=/";
	document.location.reload();
}
//decreases the text size by switching style sheets
function decreaseFontSize(){
	ssName = servername + "/css/home.css";
	typeState = "0";
	document.cookie = "largeFonts="+typeState+";path=/";
	document.location.reload();
}

function reload() {
	location = URL;
}

function noAudio() {
		alert("Audio not yet available.  Please check back soon.");
		//location.reload();
	}
	
function noPodcast() {
		alert("Podcast not yet available.  Please check back soon.");
		//location.reload();
	}

//changes background style on the top nav mouseovers to image
function change_bg(name){
	if(name=='menu1')
		document.getElementById(name).style.backgroundImage='URL('+ servername +'/images/mainnav/tab1_on.gif)';
	else if(name=='menu2')
		document.getElementById(name).style.backgroundImage='URL('+ servername +'/images/mainnav/tab2_on.gif)';
	else if(name=='menu3')
		document.getElementById(name).style.backgroundImage='URL('+ servername +'/images/mainnav/tab3_on.gif)';
	else if(name=='menu4')
		document.getElementById(name).style.backgroundImage='URL('+ servername +'/images/mainnav/tab4_on.gif)';
	else if(name=='menu5')
		document.getElementById(name).style.backgroundImage='URL('+ servername +'/images/mainnav/tab5_on.gif)';
	else if(name=='pdhome')
		document.getElementById(name).style.backgroundImage='URL('+ servername +'/images/home/pdhome_on.gif)';
	else if(name=='doctor')
		document.getElementById(name).style.backgroundImage='URL('+ servername +'/images/home/doctor_on.gif)';
	else if(name=='signup')
		document.getElementById(name).style.backgroundImage='URL('+ servername +'/images/home/signup_on.gif)';
}

//changes background style on the top nav mouseovers back to purple
function change_bg_back(name){
	if(name=='menu1')
		document.getElementById(name).style.backgroundImage='URL('+ servername +'/images/mainnav/tab1_off.gif)';
	else if(name=='menu2')
		document.getElementById(name).style.backgroundImage='URL('+ servername +'/images/mainnav/tab2_off.gif)';
	else if(name=='menu3')
		document.getElementById(name).style.backgroundImage='URL('+ servername +'/images/mainnav/tab3_off.gif)';
	else if(name=='menu4')
		document.getElementById(name).style.backgroundImage='URL('+ servername +'/images/mainnav/tab4_off.gif)';
	else if(name=='menu5')
		document.getElementById(name).style.backgroundImage='URL('+ servername +'/images/mainnav/tab5_off.gif)';
	else if(name=='pdhome')
		document.getElementById(name).style.backgroundImage='URL('+ servername +'/images/home/pdhome_off.gif)';
	else if(name=='doctor')
		document.getElementById(name).style.backgroundImage='URL('+ servername +'/images/home/doctor_off.gif)';
	else if(name=='signup')
		document.getElementById(name).style.backgroundImage='URL('+ servername +'/images/home/signup_off.gif)';
}

//this changes a picture to another picture when moused over
function change_pic(img_name,img_src) {
	document[img_name].src=img_src;
}