// (c) www.mulchprod.de


function swapHeader() {
	var images = new Array(
        "seegras.jpg",
		"gras.jpg",
        "seegras.jpg",
		"kurve.jpg",
        "seegras.jpg",
		"palme.jpg",
        "seegras.jpg",
		"wasserstein.jpg",
        "seegras.jpg"
	);
	
	imageIndex = Math.round(Math.random()*images.length);
	if(imageIndex == 0)
		imageIndex++;
	imageToLoad = images[(imageIndex-1)];
	document.getElementById('topImage').style.backgroundImage = "url(portal/pics/layout/header/"+imageToLoad+")";
	//alert("image loaded: "+document.getElementById('topImage').style.backgroundImage+ " index: "+imageIndex);
}



function setUpPage() {

    
    var objWrapperObj = YAHOO.util.Dom.get("mainContent");

    YAHOO.util.Dom.setStyle(objWrapperObj, 'opacity', '0.0');
    YAHOO.util.Dom.setStyle(objWrapperObj, 'visibility', 'visible');

    var attributes = {
            opacity: { to: 1.0 }
    };

    var animObject = new YAHOO.util.Motion(objWrapperObj, attributes, 0.5, YAHOO.util.Easing.easeIn);
    animObject.animate();
}