function preLoadimgs() {
	 	a1=new Image; a1.src="images/images/m2_02.jpg";
		a2=new Image; a2.src="images/images/m2_03.jpg";
		a3=new Image; a3.src="images/images/m2_04.jpg";
		a4=new Image; a4.src="images/images/m2_05.jpg";
		a5=new Image; a5.src="images/images/m2_06.jpg";
		a6=new Image; a6.src="images/images/m2_07.jpg";
		 }