<!-- 
if (document.images) { 
//define the left navigator button here
    Buttons_distribution_vmmsclassic_on = new Image();
    Buttons_distribution_vmmsclassic_on.src = "../images/leftnav/distribution/distribution_vmmsclassic_on.gif";
    Buttons_distribution_vmmsclassic_off = new Image();
    Buttons_distribution_vmmsclassic_off.src = "../images/leftnav/distribution/distribution_vmmsclassic_off.gif";
    
    Buttons_distribution_visionmaterials_on = new Image();
    Buttons_distribution_visionmaterials_on.src = "../images/leftnav/distribution/distribution_visionmaterials_on.gif";
    Buttons_distribution_visionmaterials_off = new Image();
    Buttons_distribution_visionmaterials_off.src = "../images/leftnav/distribution/distribution_visionmaterials_off.gif";      
}
//-->