function getBrowserType() {
        var detect = navigator.userAgent.toLowerCase();
        var browser;
        var doCheckIt = function (bString) {
                place = detect.indexOf(bString) + 1;
                return place;
        };
        if (doCheckIt('konqueror')) { browser = "konqueror"; }
        else if (doCheckIt('safari')) { browser = "safari"; }
        else if (doCheckIt('omniweb')) { browser = "omniweb"; }
        else if (doCheckIt('opera')) { browser = "opera"; }
        else if (doCheckIt('webtv')) { browser = "webtv"; }
        else if (doCheckIt('icab')) { browser = "icab"; }
        else if (doCheckIt('msie')) { browser = "msie"; }
        else if (doCheckIt('firefox')) { browser = "firefox"; }
        else if (!doCheckIt('compatible')) { browser = "nn"; }
        return browser;
}

function strTrim(str) {
        var i,j;
        i = 0;
        j = str.length-1;
        str = str.split("");
        while(i < str.length) {
                if(str[i]==" ") {
                        str[i] = "";
                } else {
                        break;
                }
                i++;
        }
        while(j > 0) {
                if(str[j]== " ") {
                        str[j]="";
                } else {
                        break;
                }
                j--;
        }
        return str.join("");
}

function igEncodeHTML(igHTML) {
        var regExLT = /</g;
        var regExGT = />/g;
        igHTML = igHTML.replace(regExLT, "&lt;");
        igHTML = igHTML.replace(regExGT, "&gt;");
        return igHTML;
}

function doCleanUp(sTxt) {
        sTxt = sTxt.replace(/(\r\n|\r|\n)/g, "\n");
        var arrTxt = sTxt.split("\n");
        for(i=0; i<arrTxt.length; i++) {
                if(arrTxt[i].substr((arrTxt[i].length-1), 1)==" ") {
                        arrTxt[i] = arrTxt[i].substr(0, (arrTxt[i].length-1));
                }
                if(arrTxt[i].substr((arrTxt[i].length-1), 1)==" ") {
                        arrTxt[i] = arrTxt[i].substr(0, (arrTxt[i].length-1));
                }
        }
        sTxt = arrTxt.join("\n");
        var regExNL1a = /([\n]{2,})/g;                  //to find two consecutive 'newlines'
        var regExNL1b = /([ ]{1,})\n/g;                 //to find more than 1 whitespace before 'newline'
        var regExNL1c = /([     |\t]{1,})\n/g;          //to find more than 1 tab before 'newline'
        var regExNL1d = /\n([ ]{1,})\n/g;               //to find a line with only spaces
        var regExNL1e = /\n([   |\t]{1,})\n/g;  //to find a line with only tabs
        var regExNL1g = / {4}/g;                                //to find 4 space chars
        sTxt = sTxt.replace(regExNL1g, "        ");
        sTxt = sTxt.replace(regExNL1d, "\n").replace(regExNL1e, "\n");
        sTxt = sTxt.replace(regExNL1b, "\n").replace(regExNL1c, "\n");
        sTxt = sTxt.replace(regExNL1a, "\n");
        if(sTxt.substr(0, 1)=="\n") {
                sTxt = sTxt.substr(1, sTxt.length);
        }
        if(sTxt.substr((sTxt.length-1), 1)=="\n") {
                sTxt = sTxt.substr(0, (sTxt.length-1));
        }
        return sTxt;
}

function getTagCode(sID) {
        var myBrowser = strTrim(navigator.appName.substring(0, 9));
        myBrowser = myBrowser.toLowerCase();
        if(document.getElementById) {
                oDoc = document.getElementById(sID);
        } else if(document.all) {
                oDoc = document.all[sID];
        }
        var getTxt = "";
        if(typeof(oDoc.innerText) != 'undefined') {
                getTxt = strTrim(oDoc.innerText);
        } else {
                getTxt = strTrim(oDoc.innerHTML);       //textContent doesn't keep \n with <LI>, so use innerHTML
                var regExLi = /<\/li>/gi;               //RegEx to find </li>
                var regExHTML = /<\S[^>]*>/g;   //RegEx to find HTML Tags
                var regExAnd = /&amp;/g;                //to find ampersand as HTML entity
                var regExSpace = /&nbsp;/g;             //to find whitespace as HTML entity
                var regExLT = /&lt;/g;                  //to find < as HTML entity
                var regExGT = /&gt;/g;                  //to find > as HTML entity
                getTxt = getTxt.replace(regExLi, "\n");         //replace </li> with \n
                getTxt = getTxt.replace(regExHTML, "");         //strip out all HTML Tags
                getTxt = getTxt.replace(regExAnd, "&");         //replace &amp; with &
                getTxt = getTxt.replace(regExSpace, " ");       //replace &nbsp; with simple whitespace
                getTxt = getTxt.replace(regExLT, "<");          //replace &lt; with <
                getTxt = getTxt.replace(regExGT, ">");          //replace &gt; with >
        }
        return getTxt;
}

function showCodeTxt(sId) {
        var cdTxt = igEncodeHTML(getTagCode(sId));
        cdTxt = doCleanUp(cdTxt);
        var cdTxtPrefix = "<html><head><title>iG:Syntax Hiliter &raquo; Plain-Text View</title><style>body { margin:0px; padding:0px; white-space:nowrap; }</style></head><body><pre>\n";
        var cdTxtSuffix = "\n</pre><br /></body></html>";
        cdWin = window.open("about:blank", "cdWin", "toolbar=0,scrollbars=1,location=0,statusbar=0,menubar=0,resizable=1,width=700,height=400,left=35,top=85");
        cdWin.document.open();
        cdWin.document.write(cdTxtPrefix+cdTxt+cdTxtSuffix);
        cdWin.document.close();
}

function getCodeTxt(sId) {
        var cdTxt = igEncodeHTML(getTagCode(sId));
        cdTxt = doCleanUp(cdTxt);
        return cdTxt;
}

function hidePlainTxt(bID) {
        var oCodeBox = document.getElementById(bID);
        if(arrCode[bID]=="") {
                alert("The HTML View for this Code Box is not available");
        } else {
                var lnkID = "l"+bID;
                lnkID = lnkID.toLowerCase();
                var oLnk = document.getElementById(lnkID);
                var sInnerHTML = "<a href=\"#\" onclick=\"javascript:showPlainTxt('"+bID+"'); return false;\">PLAIN TEXT</a>";
                oLnk.innerHTML = sInnerHTML;
                oCodeBox.innerHTML = "";
                oCodeBox.innerHTML = arrCode[bID];
                arrCode[bID] = "";
        }
}

function showPlainTxt(bID) {
        var sHtmlCode, sPlainCode, sInnerHTML, oLnk, intHeightDiff, intWidthDiff;
        var browserName = getBrowserType();
        if(browserName=="msie") {
                intHeightDiff = 20;
                intWidthDiff = 5;
        } else if(browserName=="opera") {
                intHeightDiff = 20;
                intWidthDiff = 12;
        } else if(browserName=="firefox") {
                intHeightDiff = 20;
                intWidthDiff = 12;
        }
        var oCodeBox = document.getElementById(bID);
        //get InnerHTML
        sHtmlCode = oCodeBox.innerHTML;
        arrCode[bID] = sHtmlCode;
        var lnkID = "l"+bID;
        lnkID = lnkID.toLowerCase();
        oLnk = document.getElementById(lnkID);
        sInnerHTML = "<a href=\"#\" onclick=\"javascript:hidePlainTxt('"+bID+"'); return false;\">HILITED HTML</a>";
        oLnk.innerHTML = sInnerHTML;
        sPlainCode = getCodeTxt(bID);
        var cbHeight = oCodeBox.parentNode.clientHeight;
        var cbWidth = oCodeBox.parentNode.clientWidth;
        var ptHeight = cbHeight-intHeightDiff;
        var ptWidth = cbWidth-intWidthDiff;
        sPlainCodeHTML = "<textarea style=\"width:"+ptWidth+"px; height:"+ptHeight+"px;\" wrap=\"off\">"+sPlainCode+"</textarea>";
        oCodeBox.innerHTML = "";
        oCodeBox.innerHTML = sPlainCodeHTML;
}