/*initialize image*/
if(navigator.appName=='Netscape')
{var  I1=new Image();  I1.src="intro.gif"
 var  I2=new Image();  I2.src="intro_on.gif"
 var  I3=new Image();  I3.src="obj.gif"
 var  I4=new Image();  I4.src="obj_on.gif"
 var  I5=new Image();  I5.src="sub.gif"
 var  I6=new Image();  I6.src="sub_on.gif"
 var  I7=new Image();  I7.src="date.gif"
 var  I8=new Image();  I8.src="date_on.gif"
 var  I9=new Image();  I9.src="exh.gif"
 var  IA=new Image();  IA.src="exh_on.gif"
 var  IB=new Image();  IB.src="org.gif"
 var  IC=new Image();  IC.src="org_on.gif"
 var  ID=new Image();  ID.src="adv.gif"
 var  IE=new Image();  IE.src="adv_on.gif"
 var  IF=new Image();  IF.src="form.gif"
 var  IG=new Image();  IG.src="form_on.gif"
 var  IH=new Image();  IH.src="contact.gif"
 var  IJ=new Image();  IJ.src="contact_on.gif"
 var  IK=new Image();  IK.src="bulletin2_on.gif"
var  IL=new Image();  IL.src="papers_on.gif"
var  IM=new Image();  IM.src="prog_on.gif"
}
 function intro_but(pic){ if(navigator.appName=='Netscape')
                             {document.intro.src=pic};}
 function obj_but(pic){ if(navigator.appName=='Netscape')
                             {document.obj.src=pic};}
 function sub_but(pic){ if(navigator.appName=='Netscape')
                             {document.sub.src=pic};}
 function date_but(pic){ if(navigator.appName=='Netscape')
                              {document.keydate.src=pic};}
 function exh_but(pic){  if(navigator.appName=='Netscape')
                              {document.exh.src=pic};}
 function org_but(pic){  if(navigator.appName=='Netscape')
                              {document.org.src=pic};}
 function adv_but(pic){  if(navigator.appName=='Netscape')
                              {document.adv.src=pic};}
 function form_but(pic){ if(navigator.appName=='Netscape')
                              {document.subform.src=pic};}
 function contact_but(pic){ if(navigator.appName=='Netscape')
                              {document.contact.src=pic};}
function bulletin2_but(pic){ if(navigator.appName=='Netscape')
                              {document.bulletin2.src=pic};}
function papers_but(pic){ if(navigator.appName=='Netscape')
                              {document.papers.src=pic};}
function prog_but(pic){ if(navigator.appName=='Netscape')
                              {document.prog.src=pic};}