//open study area popup
function openStudy(URL){
List=window.open(URL,"Study","width=460,height=300, scrollbars=no, left=10, x=10, top=10, y=10")
}

//open outside website
function openWebsite(URL){
List=window.open(URL,"Website","width=750,height=600, scrollbars=yes, left=10, x=10, top=10, y=10")
}

//Main nav rollovers

block10= new Image();
block20= new Image();
block30= new Image();
block40= new Image();
block50= new Image();

block11= new Image();
block21= new Image();
block31= new Image();
block41= new Image();
block51= new Image();
                
block10.src="../media/nav_research_on.gif";
block11.src="../media/nav_research_off.gif";

block20.src="../media/nav_citizen_on.gif";
block21.src="../media/nav_citizen_off.gif";

block30.src="../media/nav_about_on.gif";
block31.src="../media/nav_about_off.gif";

block40.src="../media/nav_education_on.gif";
block41.src="../media/nav_education_off.gif";

block50.src="../media/nav_internships_on.gif";
block51.src="../media/nav_internships_off.gif";

               
function displayNav(num){

if (num=="10"){
 document.research.src=block10.src;

}else if (num=="11"){
 document.research.src=block11.src;

}else if (num=="20"){
 document.citizen.src=block20.src;

}else if (num=="21"){
 document.citizen.src=block21.src;

}else if (num=="30"){
 document.about.src=block30.src;

}else if (num=="31"){
 document.about.src=block31.src;

}else if (num=="40"){
 document.education.src=block40.src;

}else if (num=="41"){
 document.education.src=block41.src;
                
}else if (num=="50"){
 document.internships.src=block50.src;

}else if (num=="51"){
 document.internships.src=block51.src;

}else if (num=="99"){
 document.research.src=block11.src;
 document.citizen.src=block21.src;
 document.about.src=block31.src;
 document.education.src=block41.src;
 document.internships.src=block51.src;
}
}



//Utility nav rollovers

block100= new Image();
block200= new Image();
block300= new Image();
block400= new Image();
block500= new Image();
block600= new Image();

block101= new Image();
block201= new Image();
block301= new Image();
block401= new Image();
block501= new Image();
block601= new Image();
                
block100.src="../media/footer_rlcnetwork_on.gif";
block101.src="../media/footer_rlcnetwork_off.gif";

block200.src="../media/footer_partners_on.gif";
block201.src="../media/footer_partners_off.gif";

block300.src="../media/footer_contacts_on.gif";
block301.src="../media/footer_contacts_off.gif";

block400.src="../media/footer_doi_on.gif";
block401.src="../media/footer_doi_off.gif";

block500.src="../media/footer_foia_on.gif";
block501.src="../media/footer_foia_off.gif";

block600.src="../media/footer_firstgov_on.gif";
block601.src="../media/footer_firstgov_off.gif";

               
function displayNav2(num){

if (num=="100"){
 document.rlcnetwork.src=block100.src;
 document.partners.src=block201.src;
 document.contacts.src=block301.src;
 document.doi.src=block401.src;
 document.foia.src=block501.src;
 document.firstgov.src=block601.src;
               
}else if (num=="200"){
 document.rlcnetwork.src=block101.src;
 document.partners.src=block200.src;
 document.contacts.src=block301.src;
 document.doi.src=block401.src;
 document.foia.src=block501.src;
 document.firstgov.src=block601.src;

}else if (num=="300"){
 document.rlcnetwork.src=block101.src;
 document.partners.src=block201.src;
 document.contacts.src=block300.src;
 document.doi.src=block401.src;
 document.foia.src=block501.src;
 document.firstgov.src=block601.src;

}else if (num=="400"){
 document.rlcnetwork.src=block101.src;
 document.partners.src=block201.src;
 document.contacts.src=block301.src;
 document.doi.src=block400.src;
 document.foia.src=block501.src;
 document.firstgov.src=block601.src;
                
}else if (num=="500"){
 document.rlcnetwork.src=block101.src;
 document.partners.src=block201.src;
 document.contacts.src=block301.src;
 document.doi.src=block401.src;
 document.foia.src=block500.src;
 document.firstgov.src=block601.src;

}else if (num=="600"){
 document.rlcnetwork.src=block101.src;
 document.partners.src=block201.src;
 document.contacts.src=block301.src;
 document.doi.src=block401.src;
 document.foia.src=block501.src;
 document.firstgov.src=block600.src;

}else if (num=="999"){
 document.rlcnetwork.src=block101.src;
 document.partners.src=block201.src;
 document.contacts.src=block301.src;
 document.doi.src=block401.src;
 document.foia.src=block501.src;
 document.firstgov.src=block601.src;
}
}



//Research JUMP to another category rollover

block1000= new Image();
block1001= new Image();
block2000= new Image();
block2001= new Image();
               
block1000.src="../media/res_col_jumptocategory_on.gif";
block1001.src="../media/res_col_jumptocategory_off.gif";
block2000.src="../media/abo_col_viewmap_on.gif";
block2001.src="../media/abo_col_viewmap_off.gif";

               
function displayNav3(num){
if (num=="1000"){
 document.categoryjump.src=block1000.src;
               
}else if (num=="1001"){
 document.categoryjump.src=block1001.src;

}else if (num=="2000"){
 document.viewmap.src=block2000.src;

}else if (num=="2001"){
 document.viewmap.src=block2001.src;

}
}



//NAVIGATION BEGIN LAYERS
//*BROWSWER SNIFF BEGIN

if(!document.all && navigator.appVersion >= "5"){
var layerRef="document.getElementById";
var styleSwitch=".style";
function showLayer(layerName){
eval(layerRef+'("'+layerName+'")'+styleSwitch+'.visibility="visible"');
}	
function hideLayer(layerName){
eval(layerRef+'("'+layerName+'")'+styleSwitch+'.visibility="hidden"');
}
}
else if (document.layers){
var layerRef="document.layers";
var styleSwitch="";
function showLayer(layerName){
eval(layerRef+'["'+layerName+'"]'+styleSwitch+'.visibility="visible"');
}	
function hideLayer(layerName){
eval(layerRef+'["'+layerName+'"]'+styleSwitch+'.visibility="hidden"');
}
}
else if (document.all){
var layerRef="document.all";
var styleSwitch=".style";
function showLayer(layerName){
eval(layerRef+'["'+layerName+'"]'+styleSwitch+'.visibility="visible"');
}	
function hideLayer(layerName){
eval(layerRef+'["'+layerName+'"]'+styleSwitch+'.visibility="hidden"');
}
}

/*if (document.getElementById){
function showLayer(){
myElement=xbGetElementById("myElement");
myElementStyle=new xbStyle(myElement);
myElementStyle.setVisibility("visible");
}	
function hideLayer(){
myElement=xbGetElementById("myElement");
myElementStyle=new xbStyle(myElement);
myElementStyle.setVisibility("hidden");
}
}*/

else if (document.all){
var layerRef="document.all";
var styleSwitch=".style";
function showLayer(layerName){
eval(layerRef+'["'+layerName+'"]'+styleSwitch+'.visibility="visible"');
}	
function hideLayer(layerName){
eval(layerRef+'["'+layerName+'"]'+styleSwitch+'.visibility="hidden"');
}
}

//*VISIBILITY SWAP

//hides all
function hideAll(num){
if (num=="99"){
hideLayer('categories');
}
}

function showSome(num){
if (num=="10"){
showLayer('categories');

}else if (num=="20"){
showLayer('climatemap');

}else if (num=="21"){
hideLayer('climatemap');

}else if (num=="100"){
hideAll('99');
}
}