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// Array Function 

function makeArray() {
var args = makeArray.arguments;

    for (var i = 0; i < args.length; i++) {
    this[i] = args[i];
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this.length = args.length;
}

// This array holds the descriptions and names of the pages.

var pages = new makeArray(" -- Jump to --",
"- - - - - - - - - - - - -",
"Introduction",
"Strong Acids and Bases",
"Weak Acids and Bases",
"Calculations with Equilibrium Constants",
"Dissociation Constants",
"Dissociation of Water",
"The pH Scale",
"Neutralization",
"The Meaning of Acids and Bases",
"The difference between strong and weak acids",
"Acids with several dissociating protons",
"Buffers and pH control",
"Measuring pH: Acid-Base Indicators",
"Solubility Equilibria",
"Postscript: Acid-base catalysis",
"Questions",
"- - - - - - - - - - - - -",
"Another Chapter..?");


// This array hold the URLs of the pages.

var urls = new makeArray("",
"",
"pag01.htm",
"pag03.htm",
"pag05.htm",
"pag07.htm",
"pag08.htm",
"pag09.htm",
"pag11.htm",
"pag13.htm",
"pag17.htm",
"pag20.htm",
"pag23.htm",
"pag26.htm",
"pag30.htm",
"pag32.htm",
"pag36.htm",
"pag42.htm",
"",
"http://www.chem.ox.ac.uk/vrchemistry/foundation.html");






// This function determines which page is selected and goes to it.

function goPage(form) {
i = form.menu.selectedIndex;            
    if (i != 0) {
    window.location.href = urls[i];  
    }
}
//-->