var revert = new Array();
var inames = new Array('youtube','facebook','twitter','googleplus','deviantart','linkedin');

if (document.images) 
{ // Preload
	var flipped = new Array();
	for(i=0; i < inames.length; i++)
	{
		flipped[i] = new Image();
		flipped[i].src= "http://matthewdoyleart.com/images/"+inames[i]+"2.gif";
	}
}

function over(num) 
{
	if(document.images) 
	{
		revert[num]=document.images[inames[num]].src;
		document.images[inames[num]].src= flipped[num].src;
	}
}

function out(num) 
{
	if(document.images) document.images[inames[num]].src= revert[num];
}