//Disadvantage: WWW server roundtrip is still done //attention: the order of the currencies *must* be the same //in *all* (currently 4) arrays! /* some global vars*/ g_ccyInx = 0; //index into currency selection g_ccyAmt = 1; //amount g_factor = 1; //currency/EUR; e.g. 1 for EUR, 0.51113 for DEM g_setVarsDone = 0; //needed to postpone document.write() until setVars has been called //freezed EURO rates g_rates = new Array(13); g_rates[0] = 1; //EUR g_rates[1] = 13.7603; //ATS g_rates[2] = 40.3399; //BEF g_rates[3] = 1.95583; //DEM g_rates[4] = 166.386; //ESP g_rates[5] = 5.94573; //FIM g_rates[6] = 6.55957; //FRF g_rates[7] = 340.750; //GRD g_rates[8] = 0.787564; //IEP g_rates[9] = 1936.27; //ITL g_rates[10] = 40.3399; //LUF g_rates[11] = 2.20371; //NLG g_rates[12] = 200.482; //PTE //positions after decimal point g_padp = new Array(13); g_padp[0] = 2; //EUR g_padp[1] = 2; //ATS g_padp[2] = 2; //BEF g_padp[3] = 2; //DEM g_padp[4] = 2; //ESP g_padp[5] = 2; //FIM g_padp[6] = 2; //FRF g_padp[7] = 2; //GRD g_padp[8] = 2; //IEP g_padp[9] = 2; //ITL g_padp[10] = 2; //LUF g_padp[11] = 2; //NLG g_padp[12] = 2; //PTE /* Sets the needed hidden variables so that the calculations can use them on reload() * * @param valuesFromForm: int: if 1: the values from the form should be used; otherwise * from the arguments */ function setVars (valuesFromForm) { //defaults ccyInx = g_ccyInx; //index into currency selection array ccyAmt = g_ccyAmt; //amount frm = get_form_by_name('calcFormId'); if (valuesFromForm) { ccyInx = frm.ccySelect.options[frm.ccySelect.selectedIndex].value; ccyAmt = frm.amount.value; } else { /* if parameters are available from last submit, use them instead of the ones in the form*/ nvPairs = getUrlNvPairs(); nvl = nvPairs.length; names = new Array(nvl); values = new Array(nvl); i = 0; /* extract names and values*/ while (i< nvl) { nv = nvPairs[i]; eqInx = nv.indexOf('='); names[i] = nv.slice(0, eqInx); values[i] = nv.slice(eqInx+1); i++; } i = 0; /* assign index and amount*/ while (i< nvl) { if (names[i] == 'ccyInx') ccyInx = values[i]; else if (names[i] == 'ccyAmt') ccyAmt = values[i]; i++; } } /* update global vars*/ g_ccyInx = ccyInx; g_ccyAmt = ccyAmt; g_factor = 1/g_rates[g_ccyInx]; /* update form vars*/ frm.amount.value = ccyAmt; frm.ccySelect.selectedIndex = ccyInx; g_setVarsDone = 1; //set flag that init is done }/*setVars*/ /* Checks if setVars has already been called. If not; calls it. * This functions must be called before every document.write if the results depend * on the global variables g_* */ function checkSetVars () { if (!g_setVarsDone) setVars(); }/*checkSetVars*/ /* Returns the name-value pairs of the URL parameters. If the convert button has been * pressed, the parameters ccyInx and ccyAmt from the form are appended to the URL and * must therefore be retrieved */ function getUrlNvPairs () { search = location.search; if (search == "") { return new Array(0); } else { pureSearch = unescape(search.slice(1)); //get rid of the '?' at start; %26 -> & return pureSearch.split("&"); } }/*getUrlNvPairs*/ /* Reloads the page*/ function reloadPage () { frm = get_form_by_name('calcForm'); href = location.href; pathname = location.pathname; // %26 = '&'; '&' is incorrect HTML new_href = window.location.pathname + '?ccyInx=' + g_ccyInx + '%26ccyAmt=' + g_ccyAmt; location.replace(new_href); }/*reloadPage*/ /* Calculates the value for the currency speficied with @param inx, and formats the * corresponding positions after the decimal point. * * @param inx: int: index of currency in currency array */ function calcValue (inx) { var floatVal = g_ccyAmt * g_factor * g_rates[inx]; var rawVal = String(floatVal); var padp = g_padp[inx]; //positions after decimal point //round var powVal = Math.round(floatVal * Math.pow(10, padp)); var roundedVal = String(powVal * Math.pow(10, -padp)); //adjust decPt - could be +1 after rounding decPt = roundedVal.indexOf("."); var decPt = roundedVal.indexOf("."); if (decPt< 0) decPt = roundedVal.length; //add missing "0" before "." if (roundedVal.substr(0, 1) == ".") { roundedVal = "0" + roundedVal; decPt += 1; } //separation of the thousands var minSign = roundedVal.indexOf("-"); var finalVal = roundedVal.substr(0, minSign+1); var preDotStr = roundedVal.substr(minSign+1, decPt); var curPos = preDotStr.length % 3; finalVal += preDotStr.substr(0, curPos); while (curPos< preDotStr.length) { if (curPos != 0) finalVal += "'"; finalVal += preDotStr.substr(curPos, curPos+3); curPos += 3; } // positions after decimal point if (padp == 0) padp = -1; //make decimal point disappear var tail = roundedVal.substr(decPt, padp+1); //append as many "0" as necessary; the '=' because to catch //cases like 0.20 =>tail would be '.2' =>padp=2 =>no final '.20' if (tail.length<= padp) { if (tail.length == 0) tail = "."; for (var i=tail.length; i<=padp; i++) tail += "0"; } finalVal += tail; return finalVal; }/*calcValue*/ /* The following functions were copied from default.js of dn5 in order to make the calculator script work */ function domCompliance () { if (document.all) return 3; if (document.getElementById) return 1; if (document.layers) return 2; return -1; } function get_form_by_name (the_name) { return get_form_by_name_and_win(window, the_name); } function get_form_by_name_and_win (win, the_name) { if (domCompliance() == 3) { // probably Internet Explorer // return win.document.all[the_name]; return win.document.getElementById(the_name); } else if (domCompliance() == 2) { // Netscape Navigator for (l=0; l