Weblabor

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--) {
			window.setTimeout("changeOpac(" + i + ",'" + id + "')",(timer * speed));
			timer++;
		}
	} else if(opacStart < opacEnd) {
		for(i = opacStart; i <= opacEnd; i++)
			{
			window.setTimeout("changeOpac(" + i + ",'" + id + "')",(timer * speed));
			timer++;
		}
	}
}

//change the opacity for different browsers
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 + ")";
}

var opacity2 = function(id, opacStart, opacEnd, millisec) {
	this.object = document.getElementById(id).style; 
    this.opacStart = opacStart;
	this.opacEnd = opacEnd;
	//speed for each frame
	var speed = Math.round(millisec / 100);
	var timer= 0;
	//this.intid = new Array();
	}
	//determine the direction for the blending, if start and end are the same nothing happens
	opacity2.prototype.fade = function(){
	var self= this;
	if(this.opacStart > this.opacEnd) {
		for(i = this.opacStart; i >= this.opacEnd; i--) {
		    //alert(i);
			window.setTimeout(function (){self.changeOpac(i);},(this.timer * this.speed));
			this.timer++;
		}
	} else if(this.opacStart < this.opacEnd) {
		for(i = this.opacStart; i <= this.opacEnd; i++)	{
		    //alert(i);
			window.setTimeout(function (){self.changeOpac(i);},(this.timer * this.speed));
			this.timer++;
		}
	}
}

//change the opacity for different browsers
opacity2.prototype.changeOpac = function(opacity) {
	this.object.opacity = (opacity / 100);
	this.object.MozOpacity = (opacity / 100);
	this.object.KhtmlOpacity = (opacity / 100);
	this.object.filter = "alpha(opacity=" + opacity + ")";
}