normal_image_1 = new Image();
			normal_image_1.src = "img/PMG_home_12.jpg";
			
			mouseover_image_1 = new Image();
			mouseover_image_1.src = "img/PMG_home_12_over.jpg";
			
		  normal_image_2 = new Image();
			normal_image_2.src = "img/PMG_home_14.jpg";
			
			mouseover_image_2 = new Image();
			mouseover_image_2.src = "img/PMG_home_14_over.jpg";
			
			normal_image_3 = new Image();
			normal_image_3.src = "img/PMG_home_16.jpg";
			
			mouseover_image_3 = new Image();
			mouseover_image_3.src = "img/PMG_home_16_over.jpg";
			
			normal_image_4 = new Image();
			normal_image_4.src = "img/PMG_home_18.jpg";
			
			mouseover_image_4 = new Image();
			mouseover_image_4.src = "img/PMG_home_18_over.jpg";
			
			function swap(){
			if (document.images){
			for (var x=0;
			x<swap.arguments.length;
			x+=2) {
			document[swap.arguments[x]].src = eval(swap.arguments[x+1] + ".src");
			}
			}
			}