function MM_openBrWindow(theURL,winName,features) { //v2.0
  window.open(theURL,winName,features);
}
<!-- Begin

image1 = new Image();
image1.src = "img/nav/nav_students_on.gif";

image2 = new Image();
image2.src = "img/nav/nav_parents_on.gif";

image3 = new Image();
image3.src = "img/nav/nav_fac_staff_ongif";


//for the pull down navigation
<!--
function land(ref, target)
{
lowtarget=target.toLowerCase();
if (lowtarget=="_self") {window.location=loc;}
else {if (lowtarget=="_top") {top.location=loc;}
else {if (lowtarget=="_blank") {window.open(loc);}
else {if (lowtarget=="_parent") {parent.location=loc;}
else {parent.frames[target].location=loc;};
}}}
}
function jump(menu)
{
ref=menu.choice.options[menu.choice.selectedIndex].value;
splitc=ref.lastIndexOf("*");
target="";
if (splitc!=-1)
{loc=ref.substring(0,splitc);
target=ref.substring(splitc+1,1000);}
else {loc=ref; target="_self";};
if (ref != "") {land(loc,target);}
}
//-->