var isNav4, isNav6, isIE4,isKonq,isSaf;

function setBrowser() {
    if (navigator.appVersion.charAt(0) == "4") {
        if (navigator.appName.indexOf("Explorer") >= 0) {
            isIE4 = true;
        }
        else {
            isNav4 = true;
        }
    }
    else if (navigator.appVersion.charAt(0) > "4") {
        if(navigator.appName.indexOf("Konqueror") >= 0) {
            isIE4 = true;
            isKonq = true;
            isSaf = true;
        }
        else {
            isNav6 = true;
        }
    }
}

function getStyleBySelector( selector ) {
    if (!isNav6) {
        return null;
    }
    var sheetList = document.styleSheets;
    var ruleList;
    var i, j;

    for (i=sheetList.length-1; i >= 0; i--) {
        ruleList = sheetList[i].cssRules;
        for (j=0; j<ruleList.length; j++) {
            if (ruleList[j].type == CSSRule.STYLE_RULE &&
                ruleList[j].selectorText == selector) {
                return ruleList[j].style;
            }   
        }
    }
    return null;
}

function getIdProperty( id, property ) {
    if (isNav6) {
        var styleObject = document.getElementById( id );
        if (styleObject != null) {
            styleObject = styleObject.style;
            if (styleObject[property]) {
                return styleObject[ property ];
            }
        }
        styleObject = getStyleBySelector( "#" + id );
        return (styleObject != null) ?
            styleObject[property] :
            null;
    }
    else if (isNav4) {
        return document[id][property];
    }
    else {
        return document.all[id].style[property];
    }
}

function setIdProperty( id, property, value ) {
    if (isNav6) {
        var styleObject = document.getElementById( id );
        if (styleObject != null) {
            styleObject = styleObject.style;
            styleObject[ property ] = value;
        }
    }
    else if (isNav4) {
        document[id][property] = value;
    }
    else if (isIE4) {
        document.all[id].style[property] = value;
    }
}

setBrowser();