function preload(imgObj,imgSrc) {
	if (document.images) {
		eval(imgObj+' = new Image()')
		eval(imgObj+'.src = "'+imgSrc+'"')
	}
}

function change(imagename,objectsrc){
if (document.images)
document.images[imagename].src=eval(objectsrc+".src")
}

preload('p01a','images/jeep_03.png')

preload('p02a','images/btns/jeep_11_sg.png')
preload('p03a','images/btns/jeep_14_of.png')
preload('p04a','images/btns/jeep_16_ow.png')
preload('p05a','images/btns/jeep_18_r.png')
preload('p06a','images/btns/jeep_21_cz.png')
preload('p07a','images/btns/jeep_23_g.png')
preload('p08a','images/btns/jeep_25_k.png')

preload('p01b','images/jeep_03_on.png')

preload('p02b','images/btns/jeep_11_sg_on.png')
preload('p03b','images/btns/jeep_14_of_on.png')
preload('p04b','images/btns/jeep_16_ow_on.png')
preload('p05b','images/btns/jeep_18_r_on.png')
preload('p06b','images/btns/jeep_21_cz_on.png')
preload('p07b','images/btns/jeep_23_g_on.png')
preload('p08b','images/btns/jeep_25_k_on.png')