a0=new Image;a0.src="images/elem3.gif";b0=new Image;b0.src="images/bg1.gif";
a1=new Image; a1.src="images/bg2.gif"; b1=new Image; b1.src="images/bg3.gif"; a2=new Image; a2.src="images/bg4.gif"; b2=new Image; b2.src="images/next1.gif"; a3=new Image; a3.src="images/next.gif"; b3=new Image; b3.src="images/marker.gif";
a4=new Image; a4.src="images/zero.gif"; b4=new Image; b4.src="images/elem4.gif"; a5=new Image; a5.src="images/elem1.gif"; b5=new Image; b5.src="images/elem2.gif";
a6=new Image; a6.src="images/butt0on.gif";
a7=new Image; a7.src="images/butt1on.gif";
a8=new Image; a8.src="images/butt2on.gif";
a9=new Image; a9.src="images/butt3on.gif";
a10=new Image; a10.src="images/butt4on.gif";
a11=new Image; a11.src="images/butt0off.gif";
a12=new Image; a12.src="images/butt1off.gif";
a13=new Image; a13.src="images/butt2off.gif";
a14=new Image; a14.src="images/butt3off.gif";
a15=new Image; a15.src="images/butt4off.gif";
a16=new Image; a16.src="images/logo1.gif";
a17=new Image; a17.src="images/logo2.gif";
a18=new Image; a18.src="images/info1.gif";