var menuwidth='175px' //default menu width
var menubgcolor='#DDFFFF'  //menu bgcolor #F6F6F6
var disappeardelay=200  //menu disappear speed onMouseout (in miliseconds)
var hidemenu_onclick="yes" //hide menu when user clicks within menu?

var ie4=document.all
var ns6=document.getElementById&&!document.all

if (ie4||ns6)
document.write('<div id="browsemenudiv" style="visibility:hidden;width:'+menuwidth+'; background: transparent; background-color: #FFFFFF; opacity: .95; filter:alpha(opacity=95);" onMouseover="clearhidemenu()" onMouseout="dynamichide(event)"></div>')

function getposOffset(what, offsettype, dropobj){
var totaloffset=(offsettype=="left")? what.offsetLeft : what.offsetTop+2;
var parentEl=what.offsetParent;
while (parentEl!=null){
totaloffset=(offsettype=="left")? totaloffset+parentEl.offsetLeft : totaloffset+parentEl.offsetTop;
parentEl=parentEl.offsetParent;
}
return totaloffset;
}


function showhide(obj, e, visible, hidden, menuwidth){
if (ie4||ns6)
dropmenuobj.style.left=dropmenuobj.style.top="-500px"
if (menuwidth!=""){
dropmenuobj.widthobj=dropmenuobj.style
dropmenuobj.widthobj.width=menuwidth
}
if (e.type=="click" && obj.visibility==hidden || e.type=="mouseover")
obj.visibility=visible
else if (e.type=="click")
obj.visibility=hidden
}

function iecompattest(){
return (document.compatMode && document.compatMode!="BackCompat")? document.documentElement : document.body
}

function clearbrowseredge(obj, whichedge){
var edgeoffset=0
if (whichedge=="rightedge"){
var windowedge=ie4 && !window.opera? iecompattest().scrollLeft+iecompattest().clientWidth-15 : window.pageXOffset+window.innerWidth-15
dropmenuobj.contentmeasure=dropmenuobj.offsetWidth
if (windowedge-dropmenuobj.x < dropmenuobj.contentmeasure)
//edgeoffset=dropmenuobj.contentmeasure-obj.offsetWidth
edgeoffset=dropmenuobj.contentmeasure-(windowedge-dropmenuobj.x-5)
}
else{
var topedge=ie4 && !window.opera? iecompattest().scrollTop : window.pageYOffset
var windowedge=ie4 && !window.opera? iecompattest().scrollTop+iecompattest().clientHeight-15 : window.pageYOffset+window.innerHeight-18
dropmenuobj.contentmeasure=dropmenuobj.offsetHeight
if (windowedge-dropmenuobj.y < dropmenuobj.contentmeasure){ //move up?
//edgeoffset=dropmenuobj.contentmeasure+obj.offsetHeight
edgeoffset=dropmenuobj.contentmeasure-obj.offsetHeight-11
if ((dropmenuobj.y-topedge)<dropmenuobj.contentmeasure) //up no good either?
edgeoffset=dropmenuobj.y+obj.offsetHeight-topedge
}
}
return edgeoffset
}

function populatemenu(isbn, author_id, site_id, div_id){
if (ie4||ns6)
var nothanks=new Array()
nothanks[0]='<a href="javascript:void(0);" onclick="myRequest.queuePost(\'/cgi-bin/no_thanks.cgi\', \'isbn='+isbn+'&site_id='+site_id+'\', \''+div_id+'\');">Not interested in this title</a>'
nothanks[1]='<a href="javascript:void(0);" onclick="myRequest.queuePost(\'/cgi-bin/no_thanks.cgi\', \'isbn='+author_id+'&site_id='+site_id+'\', \''+div_id+'\');">Not interested in this author</a>'
dropmenuobj.innerHTML=nothanks.join("")
}


function dropdownmenu(obj, e, isbn, author_id, site_id, div_id){
if (window.event) event.cancelBubble=true
else if (e.stopPropagation) e.stopPropagation()
clearhidemenu()
dropmenuobj=document.getElementById? document.getElementById("browsemenudiv") : browsemenudiv
populatemenu(isbn, author_id, site_id, div_id)

if (ie4||ns6){
showhide(dropmenuobj.style, e, "visible", "hidden", menuwidth)
dropmenuobj.x=getposOffset(obj, "left", dropmenuobj)
dropmenuobj.y=getposOffset(obj, "top", dropmenuobj)
dropmenuobj.style.left=dropmenuobj.x-clearbrowseredge(obj, "rightedge")+"px"
dropmenuobj.style.top=dropmenuobj.y-clearbrowseredge(obj, "bottomedge")+obj.offsetHeight+"px"
}

return clickreturnvalue()
}

function clickreturnvalue(){
if (ie4||ns6) return false
else return true
}

function contains_ns6(a, b) {
while (b.parentNode)
if ((b = b.parentNode) == a)
return true;
return false;
}

function dynamichide(e){
if (ie4&&!dropmenuobj.contains(e.toElement))
delayhidemenu()
else if (ns6&&e.currentTarget!= e.relatedTarget&& !contains_ns6(e.currentTarget, e.relatedTarget))
delayhidemenu()
}

function hidemenu(e){
if (typeof dropmenuobj!="undefined"){
if (ie4||ns6)
dropmenuobj.style.visibility="hidden"
}
}

function delayhidemenu(){
if (ie4||ns6)
delayhide=setTimeout("hidemenu()",disappeardelay)
}

function clearhidemenu(){
if (typeof delayhide!="undefined")
clearTimeout(delayhide)
}

if (hidemenu_onclick=="yes")
document.onclick=hidemenu