var currentstatus = 1;
function showme(obj)
{
	obj = parseInt(obj);	
	document.images["detailView"].src = path + arrImage[obj - 1];
	document.images["detailView"].alt = arrImage[obj - 1];
	document.images["next"].alt = arrImage[obj];
	document.images["previous"].alt = arrImage[obj-2];
	document.getElementById("caption").innerHTML = "<strong>" + arrCaption[obj - 1] + "</strong>";
	currentstatus = parseInt(obj);
	opacity('detailView', 60, 100, 500);
	
}
function next()
{
	currentstatus +=1; 
	if(currentstatus > arrImage.length)
		currentstatus=1;
	showme(currentstatus);
}
function previous()
{
	currentstatus -=1; 
	if(currentstatus==0)
		currentstatus=arrImage.length;
	showme(currentstatus);
}

function opacity(id, opacStart, opacEnd, millisec) {
    //speed for each frame
    var speed = Math.round(millisec / 50);
    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 hide()
{
	document.getElementById("desc").style.display = "none";
	document.getElementById("show").style.display = "";
	
}
function show()
{
	document.getElementById("desc").style.display = "";
	document.getElementById("show").style.display = "none";
	
}