function opacity_zero (id) {
	var object = document.getElementById(id).style; 
	object.opacity = (0);
	object.MozOpacity = (0);
	object.KhtmlOpacity = (0);
	object.filter = "alpha(opacity=0)";
	object.display = "none";
}
  function opacity(id, opacStart, opacEnd, millisec) {

	var speed = Math.round(millisec / 100);
	var timer = 0;


	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++;
		}
	}
}


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 + ")";
}




function currentOpac(id, opacEnd, millisec) {

	var currentOpac = 100;
	

	if(document.getElementById(id).style.opacity < 100) {
		currentOpac = document.getElementById(id).style.opacity * 100;
	}


	opacity(id, currentOpac, opacEnd, millisec)
}