function newImage(arg){if(document.images){rslt=new Image();rslt.src=arg;return rslt}}function changeImages(){if(document.images&&(preloadFlag==true)){for(var i=0;i<changeImages.arguments.length;i+=2){document[changeImages.arguments[i]].src=changeImages.arguments[i+1]}}}var preloadFlag=false;function preloadImages(){if(document.images){Next_button_normal_over=newImage("images/Next_button_normal-over.png");Order_button_normal_over=newImage("images/Order_button_normal-over.png");preloadFlag=true}}