var ResultsArray=new MakeArray(100); if (document.all) { document.styleSheets[0].addRule(".RightAlign","text-align: right"); document.styleSheets[0].addRule(".CalcTable","background-color: buttonface"); document.styleSheets[0].addRule(".CalcCaptionBack","background-color: activecaption"); document.styleSheets[0].addRule(".CalcCaptionText","color: captiontext"); document.MinutesForm.Lines_Edit.style.backgroundColor="buttonface" } ResultIndex=1; wrapped=false; ResultsOpen=false;Minutes=1;Lines=2; HelpOpen=false; UnknownVal=Lines; function ResultsPressed() { var index,HasWrapped; if ((ResultIndex==1) && (!wrapped)) {alert("There are no results to display yet!")} else { ResultsWindow=window.open("" , "ResultsW" , "toolbar=0 , location=0 , directories=0 , status=0 , menubar=1 , scrollbars=1 , resizable=1 , copyhistory=0"); ResultsWindow.document.write("Call Minutes Calculator Results Table"); ResultsWindow.document.write("

Call Minutes Results Table

") ResultsWindow.document.write("

Here are the results (max 20) of the Call Minutes Calculator. "); ResultsWindow.document.write(" The unknown figures are shown in red.

"); ResultsWindow.document.write("

"); ResultsWindow.document.write(""); ResultsWindow.document.write(""); ResultsWindow.document.write(""); HasWrapped=!wrapped; if (wrapped) {index=ResultIndex} else {index=1}; for (;(index!=ResultIndex) || (!HasWrapped);index++) { ResultsWindow.document.write(""); ResultsWindow.document.write(""); ResultsWindow.document.write(""); ResultsWindow.document.write(""); if ((index==20) && (wrapped)) {index=0;HasWrapped=true;}} now=new Date(); ResultsWindow.document.write("
"); ResultsWindow.document.write("Blocking target "); ResultsWindow.document.write("Busy hour factor (%) "); ResultsWindow.document.write("Minutes "); ResultsWindow.document.write("Lines
"); ResultsWindow.document.write(""); ResultsWindow.document.write(ResultsArray[index]); ResultsWindow.document.write(" "); ResultsWindow.document.write(""); ResultsWindow.document.write(ResultsArray[index+20]); ResultsWindow.document.write(" "); if (ResultsArray[index+80]==Minutes) {ResultsWindow.document.write("")} else {ResultsWindow.document.write("")}; ResultsWindow.document.write(ResultsArray[index+40]); ResultsWindow.document.write(" "); if (ResultsArray[index+80]==Lines) {ResultsWindow.document.write("")} else {ResultsWindow.document.write("")}; ResultsWindow.document.write(ResultsArray[index+60]); ResultsWindow.document.write("

© Westbay Engineers Ltd. 2001.
"); ResultsWindow.document.write("Results displayed - "+now.toLocaleString()+""); ResultsWindow.document.close(); ResultsOpen=true; } } function MakeArray(n) { this.length = n; for (var i = 1; i <= n; i++) { this[i] = 0 } return this } function ValidateMinutes() { ClearUnknown(); with (document.MinutesForm) { if ((Minutes_Edit.value!="") && (UnknownVal!=Minutes)) { if (MinutesNumber()>56000) { alert("Less than 56000 minutes must be entered."); Minutes_Edit.value=""; } } } } function ValidateLines() { ClearUnknown(); with (document.MinutesForm) { if ((Lines_Edit.value!="") && (UnknownVal!=Lines)) { if (LinesNumber()>180) { alert("Lines entered must be between 1 and 180."); Lines_Edit.value=""; } } } } function ClearUnknown() { with (document.MinutesForm) { if (UnknownVal==Lines) {Lines_Edit.value=""} else {Minutes_Edit.value=""} } } function ChangeUnknown(NewUnknown) { UnknownVal=NewUnknown; with (document.MinutesForm) { if (NewUnknown==Lines) { Lines_Edit.value=""; if (document.all) { Lines_Edit.style.backgroundColor="buttonface"; Minutes_Edit.style.backgroundColor="window"; } } else { Minutes_Edit.value=""; if (document.all) { Lines_Edit.style.backgroundColor="window"; Minutes_Edit.style.backgroundColor="buttonface"; } } } } function BHFNumber() { return parseInt(document.MinutesForm.BHF_Edit.value,10) } ef=(window.location.hostname.indexOf("lang.co")!=-1) || (window.location.hostname.indexOf("bay-en")!=-1) || (window.location.hostname.indexOf("tom:8000")!=-1); function ValidateBHF() { var BHFValue; with (document.MinutesForm) { ClearUnknown(); BHFValue=BHFNumber(); if ((BHFValue==0) || (BHF_Edit.value=="")) {BHF_Edit.value="17"} else {if ((BHFValue<5) || (BHFValue>50)) {alert("Busy hour factor must be between 5% and 50%"); BHF_Edit.value="17";} else {BHF_Edit.value=BHFValue} }} } function RealToText(RealNumber) { var whole,fraction,TextNumber; RealNumber=Math.round(RealNumber*1000) / 1000; whole=Math.round(RealNumber-0.5); fraction=Math.round((RealNumber-whole)*1000); TextNumber=whole + "."; if (fraction<100) {TextNumber=TextNumber + "0"}; if (fraction<10) {TextNumber=TextNumber + "0"}; TextNumber+=fraction; return TextNumber; } function BlockingNumber() { return parseFloat(document.MinutesForm.Blocking_Edit.value); } function ValidateBlocking() { var BlockingValue; with (document.MinutesForm) { ClearUnknown(); BlockingValue=BlockingNumber(); if ((BlockingValue==0) || (Blocking_Edit.value=="")) {Blocking_Edit.value="0.010"} else {BlockingValue=Math.round(BlockingValue*1000)/1000; if ((BlockingValue<0.001) || (BlockingValue>0.999)) {alert("Blocking figure must be between 0.001 and 0.999"); Blocking_Edit.value="0.010";} else {Blocking_Edit.value=RealToText(BlockingValue);} }} } function HelpPressed() {HelpWindow=window.open('help.html','HelpW','width=348,height=300,menubar,scrollbars,resizable'); HelpOpen=true; } function CalcPressed() { with (document.MinutesForm) { if ((Minutes_Edit.value=="") && (UnknownVal==Lines)) { alert("A figure for the call minutes per day must be entered."); return; } if ((Lines_Edit.value=="") && (UnknownVal==Minutes)) { alert("The number of lines must be entered."); return; } if (UnknownVal==Minutes) { if (Lines_Edit.value=="1") { Minutes_Edit.value=3; } else { Minutes_Edit.value=Math.round( ( minutesBHT(LinesNumber()) /BHFNumber()*6000)-0.5 ); } } else { Lines_Edit.value=minutesLines(MinutesNumber()*BHFNumber()/6000) } ResultsArray[ResultIndex]=Blocking_Edit.value; ResultsArray[ResultIndex+20]=BHF_Edit.value; ResultsArray[ResultIndex+40]=Minutes_Edit.value; ResultsArray[ResultIndex+60]=Lines_Edit.value; ResultsArray[ResultIndex+80]=UnknownVal; ResultIndex++; if (ResultIndex==21) {ResultIndex=1;wrapped=true;} if (ResultsOpen) {ResultsPressed()} } } function LinesNumber() {return parseInt(document.MinutesForm.Lines_Edit.value,10) } function MinutesNumber() {return parseFloat(document.MinutesForm.Minutes_Edit.value) } function erl(traffic,plines) {var PBR,index; if (traffic>0) {PBR=(1+traffic)/traffic; for (index=2;index!=plines+1;index++) {PBR=index/traffic*PBR+1; if (PBR>10000) {return 0;}} return ef/PBR;} else {return 0;} } function minutesLines(bht) { var LinesCount; LinesCount=1; while (erl(bht,LinesCount)>BlockingNumber()) {LinesCount++;} return LinesCount; } function minutesBHT(plines) { var BHTCount; BHTCount=0.005; while (erl(BHTCount,plines)