function preload(name, first, second) {  

  if (browserOK) {     
    pics[objCount] = new Array();
    pics[objCount][0] = new Image();
    pics[objCount][0].src = first;
    pics[objCount][1] = new Image();
    pics[objCount][1].src = second;
    pics[objCount][2] = name;
    objCount++;
  }
}


function on(name){
		off();
        if (browserOK) {
                for (i = 0; i < objCount; i++) {
                	if (document.images[pics[i][2]] != null) {
						if (document.images[pics[i][2]].src != pics[i][1].src) {
							if (name != pics[i][2]) { 
									document.images[pics[i][2]].src = pics[i][0].src;
							} 
							else {
									document.images[pics[i][2]].src = pics[i][1].src;
							}
						}
         			 }
       			 }
   		 }		 
}

function off(){
        if (browserOK) {
                for (i = 0; i < objCount; i++) {
					if(i!=akt){
                        if (document.images[pics[i][2]] != null) {
                                        document.images[pics[i][2]].src = pics[i][0].src;
                        }
					}
					else{
					    if (document.images[pics[i][2]] != null) {
                                        document.images[pics[i][2]].src = pics[i][1].src;
                        }
					}
                }
        }
}