var image_name = null
if(document.images){

//home

home_icon		= new Image();
home_icon.src		= "icons/home_icon.jpg";
home_icon_over		= new Image();
home_icon_over.src	= "icons/home_icon_over.jpg";

//quality

quality_icon		= new Image();
quality_icon.src	= "icons/quality_icon.jpg";
quality_icon_over	= new Image();
quality_icon_over.src	= "icons/quality_icon_over.jpg";




//Products

products_icon		= new Image();
products_icon.src	= "icons/products_icon.jpg";
products_icon_over	= new Image();
products_icon_over.src	= "icons/products_icon_over.jpg";




//exhibitions

exhibitions_icon		= new Image();
exhibitions_icon.src		= "icons/exhibitions_icon.jpg";
exhibitions_icon_over		= new Image();
exhibitions_icon_over.src	= "icons/exhibitions_icon_over.jpg";


//feedback

feedback_icon		= new Image();
feedback_icon.src	= "icons/feedback_icon.jpg";
feedback_icon_over	= new Image();
feedback_icon_over.src	= "icons/feedback_icon_over.jpg";


//contact

contact_icon		= new Image();
contact_icon.src	= "icons/contact_icon.jpg";
contact_icon_over	= new Image();
contact_icon_over.src	= "icons/contact_icon_over.jpg";


}

function change_over(image_name)
{
if (document.images){

if (image_name == "drugs_icon") document[image_name].src = drugs_icon_over.src ;

if (image_name == "home_icon") document[image_name].src = home_icon_over.src ;
if (image_name == "quality_icon") document[image_name].src = quality_icon_over.src ;
if (image_name == "products_icon") document[image_name].src = products_icon_over.src ;
if (image_name == "exhibitions_icon") document[image_name].src = exhibitions_icon_over.src ;
if (image_name == "feedback_icon") document[image_name].src = feedback_icon_over.src ;
if (image_name == "contact_icon") document[image_name].src = contact_icon_over.src ;



}
}

function change_back(image_name)
{
if (document.images){

if (image_name == "drugs_icon") document[image_name].src = drugs_icon.src ;

if (image_name == "home_icon") document[image_name].src = home_icon.src ;
if (image_name == "quality_icon") document[image_name].src = quality_icon.src ;
if (image_name == "products_icon") document[image_name].src = products_icon.src ;
if (image_name == "exhibitions_icon") document[image_name].src = exhibitions_icon.src ;
if (image_name == "feedback_icon") document[image_name].src = feedback_icon.src ;
if (image_name == "contact_icon") document[image_name].src = contact_icon.src ;


}
}