var isNav, isIE;
var coll = "";
var styleObj = "";

if (parseInt(navigator.appVersion) >= 4) {
	if (navigator.appName == "Netscape") {
		isNav = true;
	} else {
		isIE = true;
		coll = "all.";
		styleObj = ".style";
	}
}

function getObjHeight(obj) {
	if (isNav) {
		return obj.clip.height;
	} else {
		return obj.clientHeight;
	}
}

function getObjWidth(obj) {
	if (isNav) {
		return obj.clip.width;
	} else {
		return obj.clientWidth;
	}
} 

function getInsideWindowWidth() {
	if (isNav) {
		return window.innerWidth;
	} else {
		return document.body.clientWidth;
	}
}

function getInsideWindowHeight() {
	if (isNav) {
		return window.innerHeight;
	} else {
		return document.body.clientHeight;
	}
}

function shiftTo(obj, x, y) {
	if (isNav) {
		obj.moveTo(x,y);
	} else {
		obj.pixelLeft = x;
		obj.pixelTop = y;
	}
}

function centerIt() {
	var obj_loading = eval("document." + coll + "loading" + styleObj);
	var contentObj_loading = eval("document." + coll + "loading");
	var x_loading = Math.round((getInsideWindowWidth()/2)-(getObjWidth(contentObj_loading)/2));
	var y_loading = Math.round((getInsideWindowHeight()/2)-(getObjHeight(contentObj_loading)/2));
	shiftTo(obj_loading, x_loading, y_loading);
	
	var obj = eval("document." + coll + "fixieren" + styleObj);
	var contentObj = eval("document." + coll + "fixieren");
	var x = Math.round((getInsideWindowWidth()/2)-(getObjWidth(contentObj)/2));
	var y = Math.round((getInsideWindowHeight()/2)-(getObjHeight(contentObj)/2));
	shiftTo(obj, x, y);
	
	if (document.layers) {ns = 1; ie = 0;} else {ns = 0; ie = 1;}
	if(ns){
	document.layers.loading.visibility = "hide";
	document.layers.fixieren.visibility = "show";
	}
	else{
	document.all.loading.style.visibility = "hidden";
	document.all.fixieren.style.visibility = "visible";
	}
}

function handleResize() {
	if (isNav) {
		location.reload();
	} else {
		centerIt();
	}
}

function setPointer(theRow, thePointerColor, theNormalBgColor)
{
    var theCells = null;

    if (thePointerColor == '' || typeof(theRow.style) == 'undefined') {
        return false;
    }
    if (typeof(document.getElementsByTagName) != 'undefined') {
        theCells = theRow.getElementsByTagName('td');
    }
    else if (typeof(theRow.cells) != 'undefined') {
        theCells = theRow.cells;
    }
    else {
        return false;
    }

    var rowCellsCnt  = theCells.length;
    var currentColor = null;
    var newColor     = null;
    // Opera does not return valid values with "getAttribute"
    if (typeof(window.opera) == 'undefined'
        && typeof(theCells[0].getAttribute) != 'undefined' && typeof(theCells[0].getAttribute) != 'undefined') {
        currentColor = theCells[0].getAttribute('bgcolor');
        newColor     = (currentColor.toLowerCase() == thePointerColor.toLowerCase())
                     ? theNormalBgColor
                     : thePointerColor;
        for (var c = 0; c < rowCellsCnt; c++) {
            theCells[c].setAttribute('bgcolor', newColor, 0);
        } // end for
    }
    else {
        currentColor = theCells[0].style.backgroundColor;
        newColor     = (currentColor.toLowerCase() == thePointerColor.toLowerCase())
                     ? theNormalBgColor
                     : thePointerColor;
        for (var c = 0; c < rowCellsCnt; c++) {
            theCells[c].style.backgroundColor = newColor;
        }
    }

    return true;
} // end of the 'setPointer()' function