function imagePreload(){
						image_1=new Image(); image_1.src = '/fileadmin/img/nv_impressum_hover.gif'; 
						image_2=new Image(); image_2.src = '/fileadmin/img/nv_home_hover.gif'; 
						image_3=new Image(); image_3.src = '/fileadmin/img/nv_deutsch_hover.gif'; 
						image_4=new Image(); image_4.src = '/fileadmin/img/nv_english_hover.gif'; 
						//language sachen
						image_5=new Image(); image_5.src = '/fileadmin/img/nav_geschaftsfelder_hover.gif'; 
						image_6=new Image(); image_6.src = '/fileadmin/img/nav_kontakt_hover.gif'; 
						image_7=new Image(); image_7.src = '/fileadmin/img/nav_management_hover.gif';
						image_8=new Image(); image_8.src = '/fileadmin/img/nav_marktinfos_hover.gif'; 
						image_9=new Image(); image_9.src = '/fileadmin/img/nav_philosophie_hover.gif';
					}