/*
COPYRIGHT © JAMES WAKEFIELD 2003

sTopic is being used as a variable name in drill pages for IO_menu -- here it is being 
used to match with menu_data.js information?  is it necessary that both
use that variable name?  could it be changed here to have less confusion?

see main_menu.js and variables/main_menu_data.js for original approach -- variables/menu_data.js also provides details

document.write(horizMenu) command will probably appear in actual page

sMenuLevel1 is the old sThisDirectory
sMenuLevel2 is the old sThisCategory
sMenuLevel3 is the old sThisPage

The way I have it right now is to make the links relative -- so all of the pages should be on this server -- but with the sRoot variable, the address could become absolute, which is good for the AOL page, where I'm directing from the AOL page to the corresponding ChemPractice page

*/

	var nDrills = 0	// initialized -- modified in JUMP-TO MENU
	var nUnlim = 0	// corresponds to number of unlimited drills, also figured in JUMP-TO MENU
	var horizMenu
	var level1Line = ""
	var level2Line = ""
	var level3Line = ""

	var bg1bold = "9999CC"		// 9999CC
	var bg2bold = "FFFF99"		// FFFF99
	var bg3bold = "FFFFFF"		// terminal -- should be white or color of background

	var bg1norm = "999966"		// have tried 999966 and BBBBBB -- text is white


	var sRoot = "http://www.chempractice.com";

//	var drillsMenu = ""
	var sURLprefix = (sMenuLevel1 != "chempractice") ? "../" : ""
	var sURL
	var sJumpToMenu = ""	// start blank
//	var sJumpToMenu = "<OPTION VALUE=\"\">(drills ordered by topic)"	// first line
	var bContinue = false
	var sTableFeatures = " WIDTH=100% BORDER=0 CELLSPACING=0 CELLPADDING=4"

	var bIE = (navigator.appName.indexOf('Microsoft') != -1)			// true if Internet Explorer
	var bPC = (navigator.platform.indexOf('Mac') == -1)					// true if Windows/Unix/Linux

	var bOld = (parseInt(navigator.appVersion) < 4 || navigator.appVersion.indexOf("4.0") != -1)
	
/////////// TOP ROW

for (i = 0; i < mainMenuSet.length; i++) {

//	if (mainMenuSet[i].indexOf("#U#") != -1) continue		// #U# is for undocumented
	var elementsArray = mainMenuSet[i].split (" | ")

	sURL = elementsArray[1]
	if (sMenuLevel1 != "chempractice") bContinue = true
	if (!sMenuLevel2 && (elementsArray[1] == "" || elementsArray[1] == sMenuLevel1)) elementsArray[2] += " (you are viewing this page)"

	if (bIE) level1Line += ((elementsArray[1] == sMenuLevel1) || (elementsArray[1] == "" && sMenuLevel1 == "chempractice")) ? menuItem("#" + bg1bold, "IE_bold_1") : menuItem("#" + bg1norm, "IE_norm_1")
	else level1Line += ((elementsArray[1] == sMenuLevel1) || (elementsArray[1] == "" && sMenuLevel1 == "chempractice")) ? menuItem("#" + bg1bold, "NN_bold_1") : menuItem("#" + bg1norm, "NN_norm_1")
}

horizMenu = menuLine(level1Line)	// assemble top row

/////////// SECOND ROW if needed

if (bContinue) {			// decided in above routine
	bContinue = false	// reset

	for (i = 0; i < eval(sMenuLevel1 + "MenuSet.length"); i++) {
//		eval ("if (" + sMenuLevel1 + "MenuSet[i].indexOf(\"#U#\") != -1) continue")		// #U# is for undocumented
		eval ("var elementsArray = " + sMenuLevel1 + "MenuSet[i].split (\" | \")")

		sURL = sMenuLevel1 + "/" + elementsArray[1] + ".shtml"

		if (elementsArray[1] != sMenuLevel2) level2Line += (bIE) ? menuItem("#" + bg1bold, "IE_norm_2") : menuItem("#" + bg1bold, "NN_norm_2")

		else if ((elementsArray[3].indexOf("#T#") == -1) && (elementsArray[3].indexOf("#M#") == -1)) {
				bContinue = true		// setup for next step
				if (!sMenuLevel3) elementsArray[2] += " (you are viewing this page)"
				level2Line += (bIE) ? menuItem("#" + bg2bold, "IE_bold_3") : menuItem("#" + bg2bold, "NN_bold_3")
			}
			else {
				elementsArray[2] += " (you are viewing this page)"
				level2Line += (bIE) ? menuItem("#" + bg3bold, "IE_bold_3") : menuItem("#" + bg3bold, "NN_bold_3")
			}
	}

	horizMenu += menuLine(level2Line, "#" + bg1bold)
}

/////////// THIRD ROW if needed

if (bContinue) {			// decided in above routine

	for (i = 0; i < eval(sMenuLevel2 + "MenuSet.length"); i++) {
//		eval ("if (" + sMenuLevel2 + "MenuSet[i].indexOf(\"#U#\") != -1) continue")		// #U# is for undocumented
		eval ("var elementsArray = " + sMenuLevel2 + "MenuSet[i].split (\" | \")")

		sURL = sMenuLevel2 + "/" + elementsArray[1] + ".shtml"

		if (elementsArray[1] == sMenuLevel3) elementsArray[2] += " (you are viewing this page)"

		if (bIE) level3Line += (elementsArray[1] == sMenuLevel3) ? menuItem("#" + bg3bold, "IE_bold_3") : menuItem("#" + bg2bold, "IE_norm_3")
		else level3Line += (elementsArray[1] == sMenuLevel3) ? menuItem("#" + bg3bold, "NN_bold_3") : menuItem("#" + bg2bold, "NN_norm_3")
	}

	horizMenu += menuLine(level3Line, "#" + bg2bold)
}

/////////// JUMP-TO MENU (and subroutine for page-topic drill list?)

for (i = 0; i < drillsMenuSet.length; i++) {

	var drillsArray = drillsMenuSet[i].split (" | ")

/*
///// A TOPIC PAGE WILL NEED A LIST MENU:	
	if (drillsArray[1] == sMenuLevel3) {
		listMenuSetUp()
	}
*/

	sJumpToMenu += "<OPTION VALUE=\"\">_______________________________<OPTION VALUE=\"" + drillsArray[1] + "\">" + drillsArray[0].toUpperCase()

	for (j = 0; j < eval(drillsArray[1] + "MenuSet.length"); j++) {
	
		nDrills++
		
//		if (eval(drillsArray[1] + "MenuSet[j].indexOf('unlimited') != -1")) nUnlim++
		
		eval ("var elementsArray = " + drillsArray[1] + "MenuSet[j].split (\" | \")")

		if (elementsArray[3].indexOf('unlimited') != -1) nUnlim++

		sJumpToMenu += "<OPTION VALUE=\"" + elementsArray[1] + "\">* " + elementsArray[0]
	}
}

sJumpToMenu = "<FORM NAME=direct>Jump to:&nbsp;<SELECT NAME=\"Choices\" VALUE=\"Direct Menu\" onchange=\"jumpTo(this.form)\">" + "<OPTION VALUE=\"\">(" + nDrills + " drills covering " + drillsMenuSet.length + " topics)" + sJumpToMenu + "</SELECT></FORM>"

// ********* FUNCTIONS ********* 

//////////////////// menuItem(background, style) ////////////

function menuItem(background, style) {
	return "<TD BORDER=0 BGCOLOR=" + background +"><A HREF=\"" + sURLprefix + sURL + "\" onMouseOver=\"window.status='" + elementsArray[2] + "';return true\"><DIV class=" + style + ">" + elementsArray[0] + "</DIV></A></TD>"
}

//////////////////  menuLine(type, color)  ///////////////////

function menuLine(type, color) {
	return (color) ? tempBorder(color) + "<TABLE" + sTableFeatures + "><TD BORDER=0 BGCOLOR=" + color + ">&nbsp;</TD>" + type + "<TD BORDER=0 BGCOLOR=" + color + ">&nbsp;</TD></TABLE>": "<TABLE" + sTableFeatures + ">" + type + "</TABLE>"
}

//////////////////////  tempBorder(color)  /////////////////////

function tempBorder(color) {
	return "<TABLE width=100% bgcolor= " + color + " border=0 cellspacing=0 cellpadding=0><TR><TD border=0><IMG SRC = \"" + sURLprefix + "graphics/blank_pixel.gif\" HEIGHT=5></TD></TR></TABLE>"
}

//////////////////////  jumpTo()  /////////////////////

function jumpTo(form) {

	sTopicIndex = form.Choices.selectedIndex
	sTopic = form.Choices.options[sTopicIndex].text
sURL = "drills/" + form.Choices.options[sTopicIndex].value + ".shtml"

	if (form.Choices.options[sTopicIndex].value == "") {

		alert("no item selected")
		form.Choices.selectedIndex = 0
	}
		else location = sURLprefix + sURL
}

//////////////////////  listMenuSetUp()  /////////////////////

function listMenuSetUp() {

	listMenu = ""
	if (sMenuLevel3) {
		sTopic = sMenuLevel3
		directory = ""
	}
	else {
		sTopic = sMenuLevel2
		directory = "../" + sMenuLevel2 + "/"
	}

	for (k=0; k<eval(sTopic + "MenuSet.length"); k++) {
		listItem = eval(sTopic + "MenuSet[k].split (' | ')")

		if (listItem[3].indexOf("unlimited") != -1) listItem[2] += " (this drill has a limitless set of questions)"

		listMenu += "<A HREF='" + directory + listItem[1] + ".shtml' onMouseOver=\"window.status='" + sMenuLevel2 + "/" + listItem[1] + "';return true\" class=\"third\">" + listItem[0] + "</A><BR><DIV class='URL'>www.chempractice.com/" + sMenuLevel2 + "/" + listItem[1] + ".shtml</DIV><DIV class='comment'>" + listItem[2] + "</DIV><BR>"

	}

	if (eval(sTopic + "MenuSet.join().indexOf('*') != -1")) listMenu += "<BR>* indicates a page under construction"

return listMenu
}