{
	one0=new Image();
	one0.src="images/cases1_off.gif";
	one1=new Image();
	one1.src="images/cases1_on.gif";		
	
	two0=new Image();
	two0.src="images/cases2_off.gif";
	two1=new Image();
	two1.src="images/cases2_on.gif";	
	
	three0=new Image();
	three0.src="images/cases3_off.gif";
	three1=new Image();
	three1.src="images/cases3_on.gif";		
	
	four0=new Image();
	four0.src="images/cases4_off.gif";
	four1=new Image();
	four1.src="images/cases4_on.gif";	
	
	previous0=new Image();
	previous0.src="images/previous_case_on.jpg";
	previous1=new Image();
	previous1.src="images/previous_case_active.jpg";	
	
	next0=new Image();
	next0.src="images/next_case_on.jpg";
	next1=new Image();
	next1.src="images/next_case_active.jpg";	
	
	one0=new Image();
	one0.src="images/cases1_off.gif";
	one1=new Image();
	one1.src="images/cases1_on.gif";		
	
	two0=new Image();
	two0.src="images/cases2_off.gif";
	two1=new Image();
	two1.src="images/cases2_on.gif";	
	
	three0=new Image();
	three0.src="images/cases3_off.gif";
	three1=new Image();
	three1.src="images/cases3_on.gif";		
	
	four0=new Image();
	four0.src="images/cases4_off.gif";
	four1=new Image();
	four1.src="images/cases4_on.gif";		
}

function changeImage(imgName,imgState) {
	if (document.images[imgName].complete) {
		document.images[imgName].src = eval(imgState + ".src");
	}
}