/*+******************************************************************
 * Module / Library: CM2
 * File:  $RCSfile: cm_js_div_functions.js,v $
 * $Revision: 1.13 $
 * $State: Exp $
 * ---------------------------------------------------------------- *
 * Copyright (c) 2002 by                                            *
 * InterConcept GmbH                                                *
 * www.interconcept.de                                              *
 ********************************************************************
 * Purpose:
 * $Locker:  $
 * ----------------------------------------------------------------
 * History
 *  $Log: cm_js_div_functions.js,v $
 *  Revision 1.13  2006/12/21 09:56:26  jimmy
 *  check for valid div for displaying the menu item
 *
 *  Revision 1.12  2005/11/28 07:56:08  jimmy
 *  after code improvements
 *
 * ---------------------------------------------------------------- *
 * Function list
 *
 * -----------------------------------------
 * LOCAL functions  - should not be called from extenal
 * -----------------------------------------
 *
 * -----------------------------------------
 * IMPLEMENTATION INTERFACE
 * -----------------------------------------
 * usefull functions
 * -----------------------------------------
 *
 * -----------------------------------------
 * THE IMPLEMENTATION
 * -----------------------------------------
 * common part:
 * -----------------------------------------
 *
 *****************************************************************+*/

// Global variables
var isCSS, isW3C, isIE4, isIE5, isNN4, isNav, currX, currY, DisplayX, DisplayY, RefWidth, RefX, RefHeight, RefY, MoveX, MoveY, oframe = self;

// initialize upon load to let all browsers establish content objects
function initDHTMLAPI() {
    if (document.images) {
        isCSS = (document.body && document.body.style) ? true : false;
        isW3C = (isCSS && document.getElementById) ? true : false;
        isIE4 = (isCSS && document.all) ? true : false;
        isNN4 = (document.layers) ? true : false;
        isIE6CSS = (document.compatMode && document.compatMode.indexOf("CSS1") >= 0) ? true : false;


        isIE5=false;
        if(isIE4){
            if((navigator.userAgent.indexOf('MSIE 5')> 0)||(navigator.userAgent.indexOf('MSIE 6')> 0)){
                isIE5 = true;
            }
        }
    }

	if (navigator.appName == 'Netscape') isNav = true;
	if (isNav) document.captureEvents(Event.MOUSEMOVE);
	document.onmousemove = setCurrPos;
}
// set event handler to initialize API
window.onload = initDHTMLAPI;

// Seek nested NN4 layer from string name
function seekLayer(doc, name) {
    var theObj;
    for (var i = 0; i < doc.layers.length; i++) {
        if (doc.layers[i].name == name) {
            theObj = doc.layers[i];
            break;
        }
        // dive into nested layers if necessary
        if (doc.layers[i].document.layers.length > 0) {
            theObj = seekLayer(document.layers[i].document, name);
        }
    }
    return theObj;
}

// Convert object name string or object reference
// into a valid element object reference
function getRawObject(obj) {
    var theObj;
    if (typeof obj == "string") {
        if (isW3C) {
            theObj = document.getElementById(obj);
        } else if (isIE4) {
            theObj = document.all(obj);
        } else if (isNN4) {
            theObj = seekLayer(document, obj);
        }
    } else {
        // pass through object reference
        theObj = obj;
    }
    return theObj;
}

// Convert object name string or object reference
// into a valid style (or NN4 layer) reference
function getObject(obj) {
    var theObj = getRawObject(obj);
    if (theObj && isCSS) {
        theObj = theObj.style;
    }
    return theObj;
}

// Position an object at a specific pixel coordinate
function shiftTo(obj, x, y) {
    var theObj = getObject(obj);
    if (theObj) {
        if (isCSS) {
            // equalize incorrect numeric value type
            var units = (typeof theObj.left == "string") ? "px" : 0 
            theObj.left = x + units;
            theObj.top = y + units;
        } else if (isNN4) {
            theObj.moveTo(x,y)
        }
    }
}

// Move an object by x and/or y pixels
function shiftBy(obj, deltaX, deltaY) {
    var theObj = getObject(obj);
    if (theObj) {
        if (isCSS) {
            // equalize incorrect numeric value type
            var units = (typeof theObj.left == "string") ? "px" : 0 
            theObj.left = getObjectLeft(obj) + deltaX + units;
            theObj.top = getObjectTop(obj) + deltaY + units;
        } else if (isNN4) {
            theObj.moveBy(deltaX, deltaY);
        }
    }
}

// Set the z-order of an object
function setZIndex(obj, zOrder) {
    var theObj = getObject(obj);
    if (theObj) {
        theObj.zIndex = zOrder;
    }
}

// Set the background color of an object
function setBGColor(obj, color) {
    var theObj = getObject(obj);
    if (theObj) {
        if (isNN4) {
            theObj.bgColor = color;
        } else if (isCSS) {
            theObj.backgroundColor = color;
        }
    }
}

// Set the visibility of an object to visible
function show(obj) {
    var theObj = getObject(obj);
    if (theObj) {
        theObj.visibility = "visible";
    }
}

// Set the visibility of an object to hidden
function hide(obj) {
    var theObj = getObject(obj);
    if (theObj) {
        theObj.visibility = "hidden";
    }
}

// Retrieve the x coordinate of a positionable object
function getObjectLeft(obj)  {
    var elem = getRawObject(obj);
    var result = 0;
    if (document.defaultView) {
        var style = document.defaultView;
        var cssDecl = style.getComputedStyle(elem, "");
        result = cssDecl.getPropertyValue("left");
    } else if (elem.currentStyle) {
        if(!isNaN(elem.currentStyle.left)){
            result = elem.currentStyle.left;
        }else{
            result = 0;
        }
        

    } else if (elem.style) {
        result = elem.style.left;

    } else if (isNN4) {
        result = elem.left;

    }
    return parseInt(result);
}

// Retrieve the y coordinate of a positionable object
function getObjectTop(obj)  {
    var elem = getRawObject(obj);
    var result = 0;
    if (document.defaultView) {
        var style = document.defaultView;
        var cssDecl = style.getComputedStyle(elem, "");
        result = cssDecl.getPropertyValue("top");
    } else if (elem.currentStyle) {
        if(!isNaN(elem.currentStyle.top)){
            result = elem.currentStyle.left;
        }else{
            result = 0;
        }
        
    } else if (elem.style) {
        result = elem.style.top;
    } else if (isNN4) {
        result = elem.top;
    }
    return parseInt(result);
}

// Retrieve the rendered width of an element
function getObjectWidth(obj)  {
    var elem = getRawObject(obj);
    var result = 0;
    if (elem.offsetWidth) {
        result = elem.offsetWidth;
    } else if (elem.clip && elem.clip.width) {
        result = elem.clip.width;
    } else if (elem.style && elem.style.pixelWidth) {
        result = elem.style.pixelWidth;
    }
    return parseInt(result);
}

// Retrieve the rendered height of an element
function getObjectHeight(obj)  {
    var elem = getRawObject(obj);
    var result = 0;
    if (elem.offsetHeight) {
        result = elem.offsetHeight;
    } else if (elem.clip && elem.clip.height) {
        result = elem.clip.height;
    } else if (elem.style && elem.style.pixelHeight) {
        result = elem.style.pixelHeight;
    }
    return parseInt(result);
}


// Return the available content width space in browser window
function getInsideWindowWidth() {
    if (window.innerWidth) {
        return window.innerWidth;
    } else if (isIE6CSS) {
        // measure the html element's clientWidth
        return document.body.parentElement.clientWidth
    } else if (document.body && document.body.clientWidth) {
        return document.body.clientWidth;
    }
    return 0;
}
// Return the available content height space in browser window
function getInsideWindowHeight() {
    if (window.innerHeight) {
        return window.innerHeight;
    } else if (isIE6CSS) {
        // measure the html element's clientHeight
        return document.body.parentElement.clientHeight
    } else if (document.body && document.body.clientHeight) {
        return document.body.clientHeight;
    }
    return 0;
}

/* -------------------------------------
 * app functions
 * ------------------------------------- */    

function setCurrPos(evt){
    if(isNav){
		currX = evt.pageX;
		currY = evt.pageY;
    }else if(isIE4 && !isIE5){
        currX = event.x;
        currY = event.y;
    }else if(isIE5){
        currX = event.x+oframe.document.body.scrollLeft;
        currY = event.y+oframe.document.body.scrollTop;;
	}else{

		currX = window.event.x;
		currY = window.event.y;
	}

	//check the element to hidde
	if(MenuDisplaied){
		//get P2
		X2 = RefX + ((RefWidth > getObjectWidth(MenuDisplaied))?RefWidth:getObjectWidth(MenuDisplaied)) + MoveX;
		Y2 = RefY + ((RefHeight > getObjectHeight(MenuDisplaied))?RefHeight:getObjectHeight(MenuDisplaied)) + MoveY;


        RefWidth = ref.width;
        RefHeight = ref.height;

		
		//controls to hide the menu item
		if(currX < RefX || currX > X2 || currY < RefY || currY > Y2){
			hide(MenuDisplaied);
			MenuDisplaied = "";
		}
	}
}

// defines if a menu item is currently displaied
var MenuDisplaied = "";

function DisplayMenu(LayerName, Reference, ModX, ModY){
	//check if the layer exists
	var testElem = document.getElementById(LayerName);

    ModX = ModX ? ModX : 0;
    ModY = ModY ? ModY : 0;
    
    MoveX = ModX;
    MoveY = ModY;

    if(Reference && (testElem!=null)){
        ref = document.images[Reference];

        RefWidth = ref.width;
        RefHeight = ref.height;

        if(document.layers){
            DisplayX = ref.x + ModX;
            DisplayY = ref.y + ModY;
            RefX = ref.x + ModX;
            RefY = ref.y + ModY;
            
        }else{
            xPos = ref.offsetLeft;
            parentObj = ref.offsetParent;
            while (parentObj != null) {
                xPos += parentObj.offsetLeft;
                parentObj = parentObj.offsetParent;
            }

            DisplayX = xPos + ModX;
            RefX = xPos;

            yPos = ref.offsetTop;
            parentObj = ref.offsetParent;
            while (parentObj != null) {
                yPos += parentObj.offsetTop;
                parentObj = parentObj.offsetParent;
            }
            
            DisplayY = yPos + ModY;
            RefY = yPos;
        }

        shiftTo(LayerName, DisplayX, DisplayY);
    }

	if(testElem!=null){
		setZIndex(LayerName, 0);
	}

	if(MenuDisplaied && MenuDisplaied != LayerName){
        hide(MenuDisplaied);
	}

	if(testElem!=null){
		MenuDisplaied = LayerName;
		show(LayerName);
	}		
	return true;
}
function displ_div(divName) {
	shiftTo(divName, currX, currY);
	setZIndex(divName, 1);
	show(divName);
	return true;
}