// Generate Javascript for Home Page Profile Area
// width="194" height="215" 

var profList = new Array();

profList[0]= "images/2.png";
profList[1]= "images/3.png";
profList[2]= "images/4.png";
profList[3]= "images/5.png";
profList[4]= "images/6.png";
profList[5]= "images/7.png";
profList[6]= "images/8.png";
profList[7]= "images/9.png";
profList[8]= "images/10.png";
profList[9]= "images/1.png";


var countOpac=0;
var randomIndex=0;

function processHomeProfile() {

	
	//var randomIndex=Math.floor(Math.random()*profList.length);
	randomIndex++;
	if (randomIndex>=profList.length) {
		randomIndex = 0;
	}
	
	
	blendimage('home_profile', 'homeProImg', ''+profList[randomIndex], 1500);

	//setTimeout (processHomeProfile(),15000);
}


// Following JavaScript contain different Opacaity manipulation functions
// Prepared from knowledge from different sites by Faisal - TW
//

function fadeHide(id) {
	opacity(id, 100, 0, 500);
}

function fadeShow(id) {
	opacity(id, 0, 100, 500);
}

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++;
		}
	} else if(opacStart < opacEnd) {
		for(i = opacStart; i <= opacEnd; i++)
			{
			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 + ")";
	countOpac = countOpac+1;
	if (countOpac==102) {
		// Last call from blendImage
		countOpac = 0;
		setTimeout ('processHomeProfile()',4000);
	}
}

function shiftOpacity(id, millisec) {
	//if an element is invisible, make it visible, else make it ivisible
	if(document.getElementById(id).style.opacity == 0) {
		opacity(id, 0, 100, millisec);
	} else {
		opacity(id, 100, 0, millisec);
	}
}

function blendimage(divid, imageid, imagefile, millisec) {

	countOpac = 0;
	var speed = Math.round(millisec / 100);
	var timer = 0;
	
	//set the current image as background
	document.getElementById(divid).style.backgroundImage = "url(" + document.getElementById(imageid).src + ")";
	
	//make image transparent
	changeOpac(0, imageid);
	
	//make new image
	document.getElementById(imageid).src = imagefile;

	//fade in image
	for(i = 0; i <= 100; i++) {
		setTimeout("changeOpac(" + i + ",'" + imageid + "')",(timer * speed));
		timer++;
	}
}

function currentOpac(id, opacEnd, millisec) {
	//standard opacity is 100
	var currentOpac = 100;
	
	//if the element has an opacity set, get it
	if(document.getElementById(id).style.opacity < 100) {
		currentOpac = document.getElementById(id).style.opacity * 100;
	}

	//call for the function that changes the opacity
	opacity(id, currentOpac, opacEnd, millisec)
}