function change_style(target, img, mode)
{
	if(mode == "change")
	{
		document.getElementById(target).style.color = "red";
		document.getElementById(target).style.fontWeight = "bold";
		document.getElementById(img).border = 1;
		document.getElementById(img).width = 118;
		document.getElementById(img).height = 256;
	}
	else if(mode == "back")
	{
		document.getElementById(target).style.color = "black";
		document.getElementById(target).style.fontWeight = "normal";
		document.getElementById(img).border = 0;
		document.getElementById(img).width = 120;
		document.getElementById(img).height = 258;
	}
}