function visualclick(name, id)
{
	if (id > visualcount)
	{
		id = 1;
		visualid = 1;
	}
	document.getElementById('visual').src=(name+id+'.jpg');
	document.getElementById('visualtext').innerHTML=visualtext[id];
}




function imageclick()
{
	xstep = step-1;
	if (xstep < 0)
	{
		xstep = imagecount - 1;
	}
	document.location.href='/portfolio/portfolio/' + ids[xstep];
	
}


function slideit(){
		
		
		blendimage('divimage','imgimage', images[step] ,500);	

		//for (p=1; p <= imagecount; p++)
		//{
		//	var blokje = 'imageblock' + p.toString();
		//	document.getElementById(blokje).style.backgroundColor = '#ecb283';
		//}

		
		//var blokje = 'imageblock' + step.toString();
		
		if (document.getElementById('link')) 
			document.getElementById('link').innerHTML = descriptions[step] + '<font class="orange">,</font> <font class="grey2">' + years[step]+ '</font>';		
		
		step++;
		
		if (step >= imagecount)
		{
			step=0;
		}	
		else
		{
			var filename = images[step];
			temp = new Image();
			temp.src = filename;
		}
		
		timerid = setTimeout("slideit()",5000)	 
}

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 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) {
	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).style.visibility = 'hidden';
	document.getElementById(imageid).src = imagefile;
	document.getElementById(imageid).style.visibility = 'visible';
	
	//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)
}