/**
 * Function to simply change an object's classname.
 * 
 * @param Object, ID of an object
 * @param ClassName, The new classname
 * @return void
 */
function changeClassname( Object, ClassName ){
	var ShowElement = document.getElementById( Object );
	if( ShowElement && ClassName ){
		ShowElement.className = ClassName;
	}
}

/**
 * Change the opacity of an object
 * 
 * @param id The ID of the object that we want to change
 * @param opacStart The start opacity
 * @param opacEnd The end opacity
 * @param millisec The time for changing the opacity
 * @return
 */
function opacity( id, opacStart, opacEnd, millisec ) {
    //speed for each frame
    var speed = Math.round( millisec / 100 );
    var timer = 0;

    //determine the direction for the blending, if start and end are the same nothing happens
    if( opacStart > opacEnd ) {
        for( i = opacStart; i >= opacEnd; i-- ) {
            setTimeout( "changeOpac(" + i + ",'" + id + "')",( timer * speed ) );
            timer++;
        }
    } else if( opacStart < opacEnd ) {
        for(i = opacStart; i <= opacEnd; i++) {
            setTimeout("changeOpac(" + i + ",'" + id + "')",(timer * speed));
            timer++;
        }
    }
}

/*
 * change the opacity for different browsers
 */
function changeOpac( opacity, id ) {
    var object = document.getElementById( id ).style;
    object.opacity = (opacity / 100);
    object.MozOpacity = (opacity / 100);
    object.KhtmlOpacity = (opacity / 100);
    object.filter = "alpha(opacity=" + opacity + ")";
}

/*
 * Get the HTTP Object
 */
function getHTTPObject(){
	if( window.ActiveXObject ) { 
		// Object in IE7+, Firefox, Chrome, Opera, Safari
		return new ActiveXObject( "Microsoft.XMLHTTP" );
	} else if( window.XMLHttpRequest ) { 
		// Object in IE6, IE5
		return new XMLHttpRequest();
	} else {
		//No AJAX in this browser :-(
		alert( "Your browser does not support AJAX." );
		return null;
	}
}

/*
if (document.layers) { // Netscape
    document.captureEvents(Event.MOUSEMOVE);
    document.onmousemove = captureMousePosition;
} else if (document.all) { // Internet Explorer
    document.onmousemove = captureMousePosition;
} else if (document.getElementById) { // Netcsape 6
    document.onmousemove = captureMousePosition;
}
if (document.layers) { // Netscape
    document.captureEvents(Event.MOUSEMOVE);
    document.onmousemove = captureMousePosition;
} else if (document.all) { // Internet Explorer
    document.onmousemove = captureMousePosition;
} else if (document.getElementById) { // Netcsape 6
    document.onmousemove = captureMousePosition;
}
// Global variables
xMousePos = 0; // Horizontal position of the mouse on the screen
yMousePos = 0; // Vertical position of the mouse on the screen


function captureMousePosition(e) {
    if (document.layers) {
        // When the page scrolls in Netscape, the event's mouse position
        // reflects the absolute position on the screen. innerHight/Width
        // is the position from the top/left of the screen that the user is
        // looking at. pageX/YOffset is the amount that the user has
        // scrolled into the page. So the values will be in relation to
        // each other as the total offsets into the page, no matter if
        // the user has scrolled or not.
        xMousePos = e.pageX;
        yMousePos = e.pageY;
    } else if (document.all) {
        // When the page scrolls in IE, the event's mouse position
        // reflects the position from the top/left of the screen the
        // user is looking at. scrollLeft/Top is the amount the user
        // has scrolled into the page. clientWidth/Height is the height/
        // width of the current page the user is looking at. So, to be
        // consistent with Netscape (above), add the scroll offsets to
        // both so we end up with an absolute value on the page, no
        // matter if the user has scrolled or not.
        xMousePos = window.event.x+document.body.scrollLeft;
        yMousePos = window.event.y+document.body.scrollTop;
    } else if (document.getElementById) {
        // Netscape 6 behaves the same as Netscape 4 in this regard
        xMousePos = e.pageX;
        yMousePos = e.pageY;
    }
}
*/