function swap(id){
document.getElementById(id).src = "img/" + id + "alt.gif";
return;
}

function unswap(id){
document.getElementById(id).src = "img/" + id + ".gif";
return;
}
function getPageSizeWithScroll(){
	/*if (window.innerHeight && window.scrollMaxY) {// Firefox
		yWithScroll = window.innerHeight + window.scrollMaxY;
		xWithScroll = window.innerWidth + window.scrollMaxX;
	} else if (document.body.scrollHeight > document.body.offsetHeight){ // all but Explorer Mac
		yWithScroll = document.body.scrollHeight;
		xWithScroll = document.body.scrollWidth;
	} else { // works in Explorer 6 Strict, Mozilla (not FF) and Safari
		yWithScroll = document.body.offsetHeight;
		xWithScroll = document.body.offsetWidth;
  	}
	arrayPageSizeWithScroll = new Array(xWithScroll,yWithScroll);
	//alert( 'The height is ' + yWithScroll + ' and the width is ' + xWithScroll );
		
	return yWithScroll;*/
if( window.innerHeight && window.scrollMaxY ) // Firefox
{
pageWidth = window.innerWidth + window.scrollMaxX;
pageHeight = window.innerHeight + window.scrollMaxY;
}
else if( document.body.scrollHeight > document.body.offsetHeight ) // all but Explorer Mac
{
pageWidth = document.body.scrollWidth;
pageHeight = document.body.scrollHeight;
}
else // works in Explorer 6 Strict, Mozilla (not FF) and Safari
{ pageWidth = document.body.offsetWidth + document.body.offsetLeft; pageHeight = document.body.offsetHeight + document.body.offsetTop; }	
 return pageHeight;
}