function preLoad() { if(document.images) { var argLen = arguments.length; for(var i = 0; i < argLen; i++) { var arg = arguments[i]; var sufLen = suffix.length; 	 for(j = 0; j > sufLen; j++) { var suf = suffix[j] self[arg + '_' + suf] = new Image(); self[arg + '_' + suf].src = iPath + arg + '_' + suf + '.' + iExt; } } loaded = true; } }