function preload_images() {
	var i1=new Image();
	i1.src="img/boom_boom_land_on.gif";
	var i2=new Image();
	i2.src="img/boom_boom_land_text_en_on.jpg";
	var i3=new Image();
	i3.src="img/about_us_on.gif";
	var i4=new Image();
	i4.src="img/about_us_text_en_on.jpg";
	var i5=new Image();
	i5.src="img/products_on.gif";
	var i6=new Image();
	i6.src="img/products_text_en_on.jpg";
	var i7=new Image();
	i7.src="img/rental_on.gif";
	var i8=new Image();
	i8.src="img/rental_text_en_on.jpg";
	var i9=new Image();
	i9.src="img/clients_on.gif";
	var i10=new Image();
	i10.src="img/clients_text_en_on.jpg";
	var i11=new Image();
	i11.src="img/additional_services_on.gif";
	var i12=new Image();
	i12.src="img/additional_services_text_en_on.jpg";
	var i13=new Image();
	i13.src="img/contact_on.gif";
	var i14=new Image();
	i14.src="img/contact_text_en_on.jpg";	
	var i5=new Image();
	i5.src="img/boom_boom_land_text_ro_on.jpg";
	var i6=new Image();
	i6.src="img/about_us_text_ro_on.jpg";
	var i7=new Image();
	i7.src="img/products_text_ro_on.jpg";
	var i18=new Image();
	i18.src="img/rental_text_ro_on.jpg";
	var i19=new Image();
	i19.src="img/clients_text_ro_on.jpg";
	var i20=new Image();
	i20.src="img/additional_services_text_ro_on.jpg";
	var i21=new Image();
	i21.src="img/contact_text_ro_on.jpg";
}

function highlight(s,l) {
	i_img=eval("document.images."+s);
	i_text=eval("document.images."+s+"_text_"+l);

	i_img.src="img/"+s+"_on.gif";
	i_text.src="img/"+s+"_text_"+l+"_on.jpg";
}

function unhighlight(s,l) {
	i_img=eval("document.images."+s);
	i_text=eval("document.images."+s+"_text_"+l);

	i_img.src="img/"+s+"_off.gif";
	i_text.src="img/"+s+"_text_"+l+"_off.jpg";
}