btn1_on = new Image();
 btn1_on.src = "homebtn_on.gif";
 btn2_on = new Image();
 btn2_on.src = "awardbtn_on.gif";
 btn3_on = new Image();
 btn3_on.src = "picbtn_on.gif";
 btn4_on = new Image();
 btn4_on.src = "servicesbtn_on.gif";
 btn5_on = new Image();
 btn5_on.src = "testbtn_on.gif";
 btn6_on = new Image();
 btn6_on.src = "contactbtn_on.gif";

 btn1_off = new Image();
 btn1_off.src = "homebtn.gif";
 btn2_off = new Image();
 btn2_off.src = "awardbtn.gif";
 btn3_off = new Image();
 btn3_off.src = "picbtn.gif";
 btn4_off = new Image();
 btn4_off.src = "servicesbtn.gif";
 btn5_off = new Image();
 btn5_off.src = "testbtn.gif";
 btn6_off = new Image();
 btn6_off.src = "contactbtn.gif";

 function imgOn( img )
 {
 	document.images[ img ].src = eval( img + "_on.src" );
 }

 function imgOff( img )
 {
 	document.images[ img ].src = eval( img + "_off.src" );
 }