// check if the image with that id is on the page
if (document.getElementById("onlineimage")) {
	var subnav_img1 = document.getElementById("onlineimage");
	
	subnav_img1.onmouseover = function() {this.src="/radio1/listen/images/subnav/online_hover.gif";}		
	subnav_img1.onmouseout = function() {this.src="/radio1/listen/images/subnav/online_off.gif";}
	
	// preload image
	image01= new Image()
	image01.src="/radio1/listen/images/subnav/online_hover.gif"
}


// check if the image with that id is on the page
if (document.getElementById("podimage")) {
	var subnav_img2 = document.getElementById("podimage");
	
	subnav_img2.onmouseover = function() {this.src="/radio1/listen/images/subnav/pod_hover.gif";}		
	subnav_img2.onmouseout = function() {this.src="/radio1/listen/images/subnav/pod_off.gif";}
	
	// preload image
	image02= new Image()
	image02.src="/radio1/listen/images/subnav/pod_hover.gif"
}


// check if the image with that id is on the page
if (document.getElementById("radioimage")) {
	var subnav_img3 = document.getElementById("radioimage");
	
	subnav_img3.onmouseover = function() {this.src="/radio1/listen/images/subnav/radio_hover.gif";}		
	subnav_img3.onmouseout = function() {this.src="/radio1/listen/images/subnav/radio_off.gif";}
	
	// preload image
	image03= new Image()
	image03.src="/radio1/listen/images/subnav/radio_hover.gif"
}


// check if the image with that id is on the page
if (document.getElementById("tvimage")) {
	var subnav_img4 = document.getElementById("tvimage");
	
	subnav_img4.onmouseover = function() {this.src="/radio1/listen/images/subnav/tv_hover.gif";}			
	subnav_img4.onmouseout = function() {this.src="/radio1/listen/images/subnav/tv_off.gif";}
	
	// preload image
	image04= new Image()
	image04.src="/radio1/listen/images/subnav/tv_hover.gif"
}