// Fade in/out routines.

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++; 
		} 
		setTimeout("document.getElementById('" + id + "').style.display='none'",(timer * speed));
	} else if(opacStart < opacEnd) { 
		for(i = opacStart; i <= opacEnd; i++) 
			{ 
			setTimeout("changeOpac(" + i + ",'" + id + "')",(timer * speed)); 
			timer++; 
		} 
		//fix choppiness for IE6 and below
		setTimeout("document.getElementById('" + id + "').style.display='hidden'",(timer * speed));
		timer++;
		setTimeout("document.getElementById('" + id + "').style.display='inline-block'",(timer * speed));
	} 
}
//change the opacity for different browsers 
function changeOpac(opacity, id) { 
	var object = document.getElementById(id).style; 
	
	if (opacity > 0 && object.display == 'none') object.display='inline-block';
	if (opacity ==0 && object.display != 'none') object.display='none';
	
	if (opacity == 100) {
		object.opacity = undefined;
		object.MozOpacity = undefined;
		object.KhtmlOpacity = undefined;
		object.filter = undefined;
	} else {
		object.opacity = (opacity / 100); 
		object.MozOpacity = (opacity / 100); 
		object.KhtmlOpacity = (opacity / 100); 
		object.filter = "alpha(opacity=" + opacity + ")"; 
	}
}