function image_rollover(image_name)
{
	document.getElementById('' + image_name + '').src = 'images/button_' + image_name + '_over.gif';
}

function image_restore(image_name)
{
	document.getElementById('' + image_name + '').src = 'images/button_' + image_name + '_normal.gif';
}

/* Script to pre-load rollover images */

if (document.images)
{
	pic1 = new Image(); 
	pic1.src="http://www.digitalaesthetics.com.au/images/button_home_over.gif"; 
	pic2 = new Image(); 
	pic2.src="http://www.digitalaesthetics.com.au/images/button_about_over.gif"; 
	pic3 = new Image(); 
	pic3.src="http://www.digitalaesthetics.com.au/images/button_portfolio_over.gif"; 
	pic4 = new Image(); 
	pic4.src="http://www.digitalaesthetics.com.au/images/button_contact_over.gif"; 
	pic5 = new Image(); 
	pic5.src="http://www.digitalaesthetics.com.au/images/button_services_over.gif"; 
}