// JavaScript Document

function setOpacity(value,ids) 
{
    var page = document.getElementById(ids);
	page.style.opacity = value/10;
	page.style.filter = 'alpha(opacity=' + value*10 + ')';
}


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 shiftOpacity(id, millisec) {
	
	if(document.getElementById(id).style.opacity == 0) {
		opacity(id, 0, 100, millisec);
	} else {
		opacity(id, 100, 0, millisec);
	}
}

function blendimage(divid, imageid, imagefile, millisec) {
	var speed = Math.round(millisec / 100);
	var timer = 0;
	
	
	//document.getElementById(divid).style.backgroundImage = "url(" + document.getElementById(imageid).src + ")";
	
	
	changeOpac(30, imageid);
	
	
	document.getElementById(imageid).src = imagefile;
//alert(document.getElementById(imageid).src);
	
	for(i = 15; i <= 100; i++) {
		setTimeout("changeOpac(" + i + ",'" + imageid + "')",(timer * speed));
		timer++;
	}
}

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)
}