function swapImg(whichImg,toSwap) {
    whichImg.src=toSwap;
}

function imgLoad(){
    preimg1 = new Image;
    preimg1.src='/images/about_on.gif';
    
    preimg2 = new Image;
    preimg2.src='/images/about_ctr.gif';
    
    preimg3 = new Image;
    preimg3.src='/images/prod_on.gif';
    
    preimg4 = new Image;
    preimg4.src='/images/prod_ctr.gif';
    
    preimg5 = new Image;
    preimg5.src='/images/serv_on.gif';
    
    preimg6 = new Image;
    preimg6.src='/images/serv_ctr.gif';
    
    preimg7 = new Image;
    preimg7.src='/images/news_on.gif';
    
    preimg8 = new Image;
    preimg8.src='/images/news_ctr.gif';
    
    preimg9 = new Image;
    preimg9.src='/images/contact_on.gif';
    
    preimg10 = new Image;
    preimg10.src='/images/contact_ctr.gif';
    
    preimg11 = new Image;
    preimg11.src='/images/sign_on.gif';
    
    preimg12 = new Image;
    preimg12.src='/images/sign_ctr.gif';
    
    preimg13 = new Image;
    preimg13.src='/images/ameri_on.gif';
    
    preimg14 = new Image;
    preimg14.src='/images/ameri_ctr.gif';
    
    preimg15 = new Image;
    preimg15.src='/images/plus_on.gif';
    
    preimg16 = new Image;
    preimg16.src='/images/plus_ctr.gif';

}