if (document.images) {
     toproll0 = new Image
     toproll1 = new Image
     toproll2 = new Image
     toproll3 = new Image
     toproll4 = new Image
     toproll5 = new Image
     toproll6 = new Image
     toproll7 = new Image
     toproll8 = new Image
     toproll9 = new Image


     toproll0.src = 'images/main_03.gif'
     toproll1.src = 'images/a_main_over_03.gif'
     
     toproll2.src = 'images/main_04.gif'
     toproll3.src = 'images/a_main_over_04.gif'
     
     toproll4.src = 'images/main_05.gif'
     toproll5.src = 'images/a_main_over_05.gif'
     
     toproll6.src = 'images/main_06.gif'
     toproll7.src = 'images/a_main_over_06.gif'
     
     toproll8.src = 'images/main_07.gif'
     toproll9.src = 'images/a_main_over_07.gif'
 }