function img_preloader() {
	imageBuffer = new Array();
	for(i=0;i<(document.images.length); i++) {
		tmp_img_src_holder = document.images[i].src + '';
		if(tmp_img_src_holder.indexOf('_out') != -1) {
			imageBuffer[imageBuffer.length] = new Image;
			imageBuffer[imageBuffer.length - 1].src = tmp_img_src_holder.replace('out', 'over');
		}
	}
}
		
function imageSwap(f_Name) {
	i_switch = document.images[f_Name].src + '';
	if(i_switch.indexOf('out') != -1) {
		new_image = i_switch.replace('out', 'over');
	}
	else {
		new_image = i_switch.replace('over', 'out');	
	}
	document.images[f_Name].src = new_image;
}