var linkset=new Array()
//SPECIFY MENU SETS AND THEIR LINKS. FOLLOW SYNTAX LAID OUT
linkset[0]='<div class="menuitems"><a href="tempatg.htm">Temas</a></div>'
linkset[0]+='<div class="menuitems"><a href="tareasgen.htm">Tareas</a></div>'
linkset[0]+='<div class="menuitems"><a href="archivos/califgen_102(1).pdf">Calificaciones</a></div>' 
linkset[0]+='<div class="menuitems"><a >Programa labs</a></div>'
linkset[0]+='<div class="menuitems"><a >Links</a></div>'
linkset[0]+='<div class="menuitems"><a href="#" onMouseover="showmenu(event,linkset[2])" onMouseout="delayhidemenu()">lab histopatologia</a></div>'
linkset[2]='<div class="menuitems"><a >Lecturas</a></div>'
linkset[1]='<div class="menuitems"><a >Lecturas</a></div>'
linkset[1]+='<div class="menuitems"><a href="tareasesp.htm">Tareas</a></div>'
linkset[1]+='<div class="menuitems"><a >Presentaciones</a></div>'
linkset[1]+='<div class="menuitems"><a >Links</a></div>'
linkset[1]+='<div class="menuitems"><a href="archivos/calpe10-2.pdf" target="iframe" >Calificaciones</a></div>'
 
var ie4=document.all&&navigator.userAgent.indexOf("Opera")==-1
var ns6=document.getElementById&&!document.all
var ns4=document.layers
function showmenu(e,which){
if (!document.all&&!document.getElementById&&!document.layers)
return
clearhidemenu()
menuobj=ie4? document.all.popmenu : ns6? document.getElementById("popmenu") : ns4? document.popmenu : ""
menuobj.thestyle=(ie4||ns6)? menuobj.style : menuobj
if (ie4||ns6)
menuobj.innerHTML=which
else{
menuobj.document.write('<layer name=gui bgColor=#D9DDE8 width=800 onmouseover="clearhidemenu()" onmouseout="hidemenu()">'+which+'</layer>')
menuobj.document.close()
}
menuobj.contentwidth=(ie4||ns6)? menuobj.offsetWidth : menuobj.document.gui.document.width
menuobj.contentheight=(ie4||ns6)? menuobj.offsetHeight : menuobj.document.gui.document.height
eventX=ie4? event.clientX : ns6? e.clientX : e.x
eventY=ie4? event.clientY : ns6? e.clientY : e.y
var rightedge=ie4? document.body.clientWidth-eventX : window.innerWidth-eventX
var bottomedge=ie4? document.body.clientHeight-eventY : window.innerHeight-eventY
if (rightedge<menuobj.contentwidth)
menuobj.thestyle.left=ie8? document.body.scrollLeft+eventX-menuobj.contentwidth : ns8? window.pageXOffset+eventX-menuobj.contentwidth : eventX-menuobj.contentwidth
else
if (bottomedge<menuobj.contentheight)
menuobj.thestyle.top=ie4? document.body.scrollTop+eventY-menuobj.contentheight : ns6? window.pageYOffset+eventY-menuobj.contentheight : eventY-menuobj.contentheight
else
menuobj.thestyle.top=ie4? document.body.scrollTop+event.clientY : ns6? window.pageYOffset+eventY : eventY
menuobj.thestyle.visibility="visible"
return false
}
function contains_ns6(a, b) {
while (b.parentNode)
if ((b = b.parentNode) == a)
return true;
return false;
}
function hidemenu(){
if (window.menuobj)
menuobj.thestyle.visibility=(ie4||ns6)? "hidden" : "hide"
}
function dynamichide(e){
if (ie4&&!menuobj.contains(e.toElement))
hidemenu()
else if (ns6&&e.currentTarget!= e.relatedTarget&& !contains_ns6(e.currentTarget, e.relatedTarget))
hidemenu()
}
function delayhidemenu(){
if (ie4||ns6||ns4)
delayhide=setTimeout("hidemenu()",500)
}
function clearhidemenu(){
if (window.delayhide)
clearTimeout(delayhide)
}
function highlightmenu(e,state){
if (document.all)
source_el=event.srcElement
else if (document.getElementById)
source_el=e.target
if (source_el.className=="menuitems"){
source_el.id=(state=="on")? "mouseoverstyle" : ""
}
else{
while(source_el.id!="popmenu"){
source_el=document.getElementById? source_el.parentNode : source_el.parentElement
if (source_el.className=="menuitems"){
source_el.id=(state=="on")? "mouseoverstyle" : ""
}
}
}
}
if (ie4||ns6)
document.onclick=hidemenu

<a onMouseover="showmenu(event,linkset[0])" onMouseout="delayhidemenu()">Patologia General</a><p>
<a onMouseover="showmenu(event,linkset[1])" onMouseout="delayhidemenu()">Patologia Especial</a><hr>