function toggle(whichOne) {
	
	if (document.getElementById(whichOne).style.display == 'none'){
		document.getElementById(whichOne).style.display = '';
		//document.getElementById('container').id = 'container_work' ;
	} else {
		document.getElementById(whichOne).style.display = 'none';
		//document.getElementById('container_work').id = 'container' ;
	}
}

function kill(whichOne) {
	var obj = document.getElementById(whichOne);
	obj.innerHTML = "";
}

//rollover function

function rollover(imgId,replaceImg) {
	//alert(replaceImg) ;
	document.images[imgId].src = replaceImg.src ;
}

function backToTop() {
    var x1 = x2 = x3 = 0;
    var y1 = y2 = y3 = 0;

    if (document.documentElement) {
        x1 = document.documentElement.scrollLeft || 0;
        y1 = document.documentElement.scrollTop || 0;
    }

    if (document.body) {
        x2 = document.body.scrollLeft || 0;
        y2 = document.body.scrollTop || 0;
    }

    x3 = window.scrollX || 0;
    y3 = window.scrollY || 0;

    var x = Math.max(x1, Math.max(x2, x3));
    var y = Math.max(y1, Math.max(y2, y3));

    window.scrollTo(Math.floor(x / 2), Math.floor(y / 2));

    if (x > 0 || y > 0) {
        window.setTimeout("backToTop()", 25);
    }
}