/******(c) Ger Versluis 2000 version simple 4 April 2002******/
var NoOffFirstLineMenus=3;		
var LowBgColor="#77cccc";
var HighBgColor="#0000AA";
var FontLowColor="black";
var FontHighColor="white";
var BorderColor="#77cccc";
var BorderWidth=1;
var BorderBtwnElmnts=1;
var FontFamily="comic sans ms,technical,arial"
var FontSize=9;
var FontBold=0;
var FontItalic=0;
var MenuTextCentered="left";
var MenuCentered="left";
var MenuVerticalCentered="top";
var ChildOverlap=0;
var ChildVerticalOverlap=0;
var StartTop=120;
var StartLeft=0;
var VerCorrect=-60;
var HorCorrect=0;
var LeftPaddng=3;
var TopPaddng=2;
var FirstLineHorizontal=0;
var MenuFramesVertical=1;
var DissapearDelay=500;
var TakeOverBgColor=1;
var MenuUsesFrames=1;
var FirstLineFrame="contents";
var SecLineFrame="main";
var DocTargetFrame="main";
var TargetLoc="";
var UnfoldsOnClick=0;
var BaseHref="";
var Arrws=['../../js_menu/tri.gif',5,10,'../../js_menu/tridown.gif',10,5,'../../js_menu/trileft.gif',5,10];
var PartOfWindow=.8;							
var MenuSlide="";
var MenuShadow="";
var MenuOpacity="";
	
function BeforeStart(){return}
function AfterBuild(){return}
function BeforeFirstOpen(){ 
   if(ScLoc.HideArray){ 
      var H_A,H_Al,H_El,i; 
      H_A=ScLoc.HideArray; 
      H_Al=H_A.length; 
      for (i=0;i<H_Al;i++){ 
      H_El=Nav4?ScLoc.document.layers[H_A[i]]:DomYes?ScLoc.document.getElementById(H_A[i]).style:ScLoc.document.all[H_A[i]].style; 
      H_El.visibility=M_Hide}}} 

function AfterCloseAll(){ 
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      var H_A,H_Al,H_El,i; 
      H_A=ScLoc.HideArray; 
      H_Al=H_A.length; 
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      H_El=Nav4?ScLoc.document.layers[H_A[i]]:DomYes?ScLoc.document.getElementById(H_A[i]).style:ScLoc.document.all[H_A[i]].style; 
      H_El.visibility=M_Show}}}

// Menu tree:
// MenuX=new Array("ItemText","Link","background image",number of sub elements,height,width);

Menu1=new Array("Chapter 1","","",5,20,90);
	Menu1_1=new Array("Introduction","introduction.html","",0,22,180);
	Menu1_2=new Array("Magnetic induction","induction.html","",0);
	Menu1_3=new Array("Magnetic fields","magnetic_field.html","",0);
        Menu1_4=new Array("Magnetic domains","magnetic_domains.html","",0);
	Menu1_5=new Array("The Earth's field","earths_mag_field.html","",0);
Menu2=new Array("Chapter 2","","",3,20,90);
	Menu2_1=new Array("Magnetic circuits","magnetic_circuit.html","",0,22,180);
	Menu2_2=new Array("Field stength","field_strength.html","",0);
	Menu2_3=new Array("Permeability","permeability.html","",0);  	
Menu3=new Array("Back to:","","",3);
	Menu3_1=new Array("Science Campus","javascript:top.document.location.href='../../../index.html'","",0,22,180);
	Menu3_2=new Array("Physics Dept","javascript:top.document.location.href='../../physics_dept.html'","",0);
	Menu3_3=new Array("Engineering Dept","javascript:top.document.location.href='../../../engineering/engineering_dept.html'","",0);