/*
* DHTML crossbrowser-library
* General functions
*
* by TeleComputing Sweden AB
*/

/* DHTML crossbrowser-library ******/

/* DHTML-object ---------------------
METHODS:
getPageTop(): int - absolute top position in pixels
getPageLeft(): int - absolute left position in pixels
getWidth(): int - width in pixels
getHeight(): int - height in pixels
setLeft(left) - sets left position in pixels
setTop(top) - sets top position in pixels
setWidth(width) - sets width in pixels
setHeight(height) - sets height in pixels
setPosition(left, top)
setSize(width, height)
setOpacity(opacity) - sets opacity, 0-100, where 0 is totally transparent.
show() - sets visibility to visible
hide() - sets visibility to hidden
getInnerHTML(): String - gets inner HTML
setInnerHTML(html) - sets inner HTML
PROPERTIES:
initialized: boolean - set to true when initialized by getObj

style: The element's style object

*/

function getObj(id) {
    var obj = new Object();
    if (typeof (id) == 'string') {
        if (document.getElementById) //W3C
        {
            obj = document.getElementById(id);
        }
        else if (document.all) //IE
        {
            obj = document.all(id);
        }
        else //not IE or W3C
        {
            obj.style = new Object();
        }
    } else {
        obj = id;
    }
    //custom methods
    if (typeof obj == 'object') {
        if (obj != null)
            if (!obj.initialized) {
            obj.getPageTop = obj_getPageTop;
            obj.getPageLeft = obj_getPageLeft;
            obj.getTop = obj_getTop;
            obj.getLeft = obj_getLeft;
            obj.getWidth = obj_getWidth;
            obj.getHeight = obj_getHeight;
            obj.setLeft = obj_setLeft;
            obj.setTop = obj_setTop;
            obj.setWidth = obj_setWidth;
            obj.setHeight = obj_setHeight;
            obj.setPosition = obj_setPosition;
            obj.setSize = obj_setSize;
            obj.setOpacity = obj_setOpacity;
            obj.show = obj_show;
            obj.hide = obj_hide;
            obj.getInnerHTML = obj_getInnerHTML;
            obj.setInnerHTML = obj_setInnerHTML;

            obj.initialized = true;
        }
    }

    return obj;
}
function obj_getPageTop() {
    return getAbsolutePos(this, 'Top');
}
function obj_getPageLeft() {
    return getAbsolutePos(this, 'Left');
}
function obj_getTop() {
    return this.offsetTop;
}
function obj_getLeft() {
    return this.offsetLeft;
}
function obj_getWidth() {
    return this.clientWidth;
}
function obj_getHeight() {
    return this.clientHeight;
}
function obj_setLeft(left) {
    this.style.left = left + 'px';
}
function obj_setTop(top) {
    this.style.top = (top - getScrollY()) + 'px';
}
function obj_setWidth(width) {
    this.style.width = width + 'px';
}
function obj_setHeight(height) {
    this.style.height = height + 'px';
}
function obj_setPosition(left, top) {
    this.setLeft(left);
    this.setTop(top);
}
function obj_setSize(width, height) {
    this.setWidth(width);
    this.setHeight(height);
}
function obj_setOpacity(opacity) {
    if (opacity > 0) this.show();
    if (opacity <= 0) this.hide();
    opacity = (opacity == 100) ? 99.999 : opacity; //Fixing a flicker-bug in some browser

    this.style.filter = 'alpha(opacity:' + opacity + ')'; //IE/Win
    this.style.KHTMLOpacity = opacity / 100; //Safari<1.2, Konqueror
    this.style.MozOpacity = opacity / 100; //Older Mozilla and Firefox
    this.style.opacity = opacity / 100; //Safari 1.2, newer Firefox and Mozilla, CSS3
}
function obj_show() {
    this.style.visibility = 'visible';
    this.style.display = 'block';
}
function obj_hide() {
    this.style.visibility = 'hidden';
    this.style.display = 'none';
}
function obj_getInnerHTML() {
    if (typeof this.innerHTML != 'undefined') {
        return this.innerHTML;
    } else {
        //...
    }
}
function obj_setInnerHTML(html) {
    if (typeof this.innerHTML != 'undefined') {
        this.innerHTML = ''; //for Mac IE
        this.innerHTML = html;
    } else {
        //...
    }
}

// For backwards-compatibility ------
function setInnerHTML(id, html) {
    getObj(id).setInnerHTML(html);
}
function hideObj(id) {
    getObj(id).hide();
}
function showObj(id) {
    getObj(id).show();
}
function getAbsoluteTop(id) {
    return getAbsolutePos(id, 'Top');
}
function getAbsoluteLeft(id) {
    return getAbsolutePos(id, 'Left');
}
function setOpacity(id, opacity) {
    getObj(id).setOpacity(opacity);
}

// General DHTML functions ----------
function getAbsolutePos(id, which) {
    var obj = getObj(id), iPos = 0;
    while (obj != null) {
        iPos += obj['offset' + which];
        //if (obj['scroll' + which]) iPos -= obj['scroll' + which];
        obj = obj.offsetParent;
    }
    if (which == 'Top') {
        iPos += getScrollY();
    } else {
        //iPos += getScrollX();
    }
    return iPos
}
function getScrollX() {
    if (window.scrollX) {
        return window.scrollX;
    } else if (document.body.scrollLeft) {
        return document.body.scrollLeft;
    } else if (document.documentElement && document.documentElement.scrollLeft) {
        return document.documentElement.scrollLeft;
    } else if (window.innerHeight) {
        return window.pageXOffset;
    }
    return 0;
}
function getScrollY() {
    if (window.scrollY) {
        return window.scrollY;
    } else if (document.body.scrollTop) {
        return document.body.scrollTop;
    } else if (document.documentElement && document.documentElement.scrollTop) {
        return document.documentElement.scrollTop;
    } else if (window.innerHeight) {
        return window.pageYOffset;
    }
    return 0;
}


/* General functions *************/
String.prototype.trim = function() {
    return this.replace(/^\s*|\s*$/g, '');
}
function trimString(sInString) {
    return sInString.trim();
}
function inArray(value, arr) {
    //if(typeof(arr) == 'array')
    for (var i = 0; i < arr.length; i++) if (arr[i] == value) return true;
    return false;
}
function max(value1, value2) {
    return value1 > value2 ? value1 : value2;
}
function min(value1, value2) {
    return value1 < value2 ? value1 : value2;
}