// JavaScript Document
alphato = false;
function opacity(id, opacStart, opacEnd, millisec){
	if(document.getElementById(id)){	
		clearTimeout(intervallen[id]);
		//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--) { 
				intervallen[id] = setTimeout("changeOpac(" + i + ",'" + id + "')",(timer * speed)); 
				timer++; 
			} 
		} else if(opacStart < opacEnd) { 
			for(i = opacStart; i <= opacEnd; i++) 
				{ 
				intervallen[id] = setTimeout("changeOpac(" + i + ",'" + id + "')",(timer * speed)); 
				timer++; 
			} 
		}
	}
} 

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