var hm_off = new Image();
    hm_off.src = "pics/home.gif";
var hm_on = new Image();
    hm_on.src = "pics/home_on.gif";
  
var lw_off = new Image();
    lw_off.src = "pics/law.gif";
var lw_on = new Image();
    lw_on.src = "pics/law_on.gif";    

var vt_off = new Image();
    vt_off.src = "pics/vote.gif";
var vt_on = new Image();
    vt_on.src = "pics/vote_on.gif"; 

var cl_off = new Image();
    cl_off.src = "pics/colv.gif";
var cl_on = new Image();
    cl_on.src = "pics/colv_on.gif"; 

var blog_off = new Image();
    blog_off.src = "pics/blog.gif";
var blog_on = new Image();
    blog_on.src = "pics/blog_on.gif"; 
    
var ads_off = new Image();
    ads_off.src = "pics/ads.gif";
var ads_on = new Image();
    ads_on.src = "pics/ads_on.gif";     
    
var wr_off = new Image();
    wr_off.src = "pics/write.gif";
var wr_on = new Image();
    wr_on.src = "pics/write_on.gif";      

function MouseOn(imageName)	{
	document.images[imageName].src = eval(imageName + "_on.src");
}
function MouseOff(imageName)	{
	document.images[imageName].src = eval( imageName + "_off.src" );
}