// Script by Jamie Johnson with opacity function by http://brainerror.net/scripts/javascript/blendtrans/
stasis = 0; // disabled if greater than 1.
proceed = true;
function fadeOut(outDiv) {
	opacity(outDiv, 100, 0, 1000)
}
function imageMaster(topImage, backImage) {
	document.getElementById('topLeftImg').src=topImage;
	document.getElementById('topLeft').style.backgroundImage="url("+backImage+")";
	if (proceed==true) { 
		fadeOut('topLeftImg');
		if (stasis<6) { stasis++; }
	} 
}
function rotateImage() {	
	if (stasis==0) {
		stasis++;
	}
	else if (stasis==1) {
		changeOpac(100,'img1');
		changeOpac(100,'img2');
		changeOpac(100,'img3');
		changeOpac(100,'img4');
		changeOpac(100,'img5');
		changeOpac(100,'img6');
		if (proceed) {fadeOut('img1');stasis++;}
	} else if (stasis==2) {
		if (proceed) {fadeOut('img2');stasis++;}
	} else if (stasis==3) {
		if (proceed) {fadeOut('img3');stasis++;}
	} else if (stasis==4) {
		if (proceed) {fadeOut('img4');stasis++;}
	} else if (stasis==5) {
		if (proceed) {fadeOut('img5');stasis++;}
	} else if (stasis==6) {
		if (proceed) {fadeOut('img6');}
		if (proceed==true) { stasis=1; }
	}
	if (proceed==true) { setTimeout("rotateImage()",5000); }
}
/*function stopImage(num) {
	document.getElementById('resbtn').style.visibility="visible";
	stasis=num;
	proceed=false;
	rotateImage();
}
function resumeImages() {
	document.getElementById('resbtn').style.visibility="hidden";
	proceed=true;
	if (stasis==6) { stasis=1; } else {	stasis++; }
	rotateImage();
}*/
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 + ")";
} 
function displayImage(num) {
	proceed=false;
	changeOpac(0,'img1');
	changeOpac(0,'img2');
	changeOpac(0,'img3');
	changeOpac(0,'img4');
	changeOpac(0,'img5');
	changeOpac(0,'img6');
	changeOpac(0,'img7');
	changeOpac(100,'img'+num);
	document.getElementById('resumeButton').style.display="inline";
}
function resumeRotation() {
	proceed=true;
	changeOpac(100,'img1');
	changeOpac(100,'img2');
	changeOpac(100,'img3');
	changeOpac(100,'img4');
	changeOpac(100,'img5');
	changeOpac(100,'img6');
	changeOpac(100,'img7');
	document.getElementById('resumeButton').style.display="none";
	stasis=0;
	rotateImage();
}