var p1, p2, p3, p4, p5, p6;

if(document.images)
{
	
	p1 = new Image();
	p1.src="images/h_btn_home.gif";
	
	p2 = new Image();
	p2.src="images/h_btn_about.gif";
	
	p3 = new Image();
	p3.src="images/h_btn_case.gif";

	p4 = new Image();
	p4.src="images/h_btn_download.gif";
	
	p5 = new Image();
	p5.src="images/h_btn_faq.gif";

	p6 = new Image();
	p6.src="images/h_btn_contact.gif";

}