// JavaScript Document

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 hideImage(id){
  opacity(id, 100, 10, 500);
  setTimeout("document.getElementById(\""+id+"c\").style.display = 'block'",500);
  document.getElementById(id+"a").href = "javascript: showImage('"+id+"')";
  document.getElementById(id+"a").innerHTML = "[ see ]";
}

  function showImage(id){

	var object = document.getElementById(id+"c").style;	
	
	object.display = 'none';
	
	opacity(id, 10, 100, 250);
	document.getElementById(id+"a").href = "javascript: hideImage('"+id+"')";
	document.getElementById(id+"a").innerHTML = "[ read ]";
  }