function change_size(){
	var height = document.body.offsetHeight;
	if ( window.innerHeight > height) {
		height = window.innerHeight;
	}
	height = (height - 350) + "px";
	document.getElementById('column2').style.height =  height;
	document.getElementById('column3').style.height =  height;
	document.getElementById('column4').style.height =  height;
}

function init(){
	window.onresize = change_size;
}

function preload(){ 
  var args = preload.arguments;
  document.imageArray = new Array(args.length);
  for(var i=0; i<args.length; i++){
    document.imageArray[i] = new Image;
    document.imageArray[i].src = args[i];
  }
}

function onload_preload(){
	preload('image/links/e-news.gif',
			'image/links/e-articles.gif',
			'image/links/e-home.gif',
			'image/links/e-works.gif',
			'image/links/e-bio.gif'
			);
}

function sw(imgName, imgSrc){
	imgName.src = imgSrc;
}

function toggle_content(which_to_hide, which_to_show){
	document.getElementById(which_to_hide).style.display = 'none';
	document.getElementById(which_to_show).style.display = 'block';
}