function pager (which) {
	var strImageSrc = "";
	var strNewImage = "";
	buttonpressed = which;
	for( a=1; a<=howmanysteps; a++ ) {
		document.getElementById('video'+a).style.display='none';
		if ( so_type[a] == "video" ) {
			document.getElementById('video'+a).innerHTML='';
			if ( a != buttonpressed ) {
				strImageSrc = document.getElementById('episode'+a+'_img').src;
				strNewImage = strImageSrc.replace(/_on/ , "_off");
				document.getElementById('episode'+a+'_img').src = strNewImage;
			}
		}
	}
	if ( so_type[which] == "video" ) {
		so[which].write("video"+which);
	}
	document.getElementById('video'+which).style.display='block';
}
function Rollover(objImg) {
	var strImageSrc = objImg.src
	var strNewImage = ""
	if (strImageSrc.indexOf("_off") != -1) {
		strNewImage = strImageSrc.replace(/_off/ , "_on")
	} else {
		if (strImageSrc.indexOf("episode"+buttonpressed) == -1) {
			strNewImage = strImageSrc.replace(/_on/ , "_off")
		} else {
			strNewImage = strImageSrc.replace(/_off/ , "_on")
		}
	}
	objImg.src =  strNewImage
}

function highlight(imgID){
	if(imgID!=""){
		var objImg = document.getElementById(imgID);
		var strImageSrc = objImg.src;
		var strNewImage = strImageSrc.replace(/_off/ , "_on");
	  
		objImg.onmouseout=null;
		objImg.onmouseover=null;
		objImg.src = strNewImage;
	}
}



function PopAWindow(extra) {
	var win = window.open("openletter.html?" + extra, "pop_window", "resizable=0,scrollbars=0,width=700,height=950,left=100,top=5,toolbar=0,menubar=0,status=0");
	win.focus();
	return false;
}

function PagerWithTrackview() {

pager('6');
pageTracker._trackPageview('/learn more');

}

function PopUpwithTrackPageView() {

PopAWindow();
pageTracker._trackPageview('/letter on progress');

}