// JavaScript Document

// javascript 2 - Random Image// 
// similar in function to the image rotator on the CBC home page, but specific to the Workbooks's ...............

var theImages = new Array() // do not change this
// To add more image files, continue with the
// pattern below, adding to the array.

theImages[0] = '/workbooks/images/wkbk_header1.jpg'
theImages[1] = '/workbooks/images/wkbk_header2.jpg'
theImages[2] = '/workbooks/images/wkbk_header3.jpg'
theImages[3] = '/workbooks/images/wkbk_header4.jpg'
theImages[4] = '/workbooks/images/wkbk_header5.jpg'



var j = 0
var p = theImages.length;
var preBuffer = new Array()
for (i = 0; i < p; i++){
   preBuffer[i] = new Image()
   preBuffer[i].src = theImages[i]
}
var whichImage = Math.round(Math.random()*(p-1));
function showWKBKImage(){
document.write('<img src="'+theImages[whichImage]+'" alt="Channing Bete Company&reg; Workbooks">');
}


// Jump menu ..................................

function MM_jumpMenu(targ,selObj,restore){ //v3.0
  eval(targ+".location='"+selObj.options[selObj.selectedIndex].value+"'");
  if (restore) selObj.selectedIndex=0;
}

function MM_findObj(n, d) { //v4.01
  var p,i,x;  if(!d) d=document; if((p=n.indexOf("?"))>0&&parent.frames.length) {
    d=parent.frames[n.substring(p+1)].document; n=n.substring(0,p);}
  if(!(x=d[n])&&d.all) x=d.all[n]; for (i=0;!x&&i<d.forms.length;i++) x=d.forms[i][n];
  for(i=0;!x&&d.layers&&i<d.layers.length;i++) x=MM_findObj(n,d.layers[i].document);
  if(!x && d.getElementById) x=d.getElementById(n); return x;
}

function MM_jumpMenuGo(selName,targ,restore){ //v3.0
  var selObj = MM_findObj(selName); if (selObj) MM_jumpMenu(targ,selObj,restore);
}