/*image preload*/
function WM_preloadImages() {
	if (document.images) {
		if (typeof(document.WM) == 'undefined'){
			document.WM = new Object();
		}
		document.WM.loadedImages = new Array();
		var argLength = WM_preloadImages.arguments.length;
		for(arg=0;arg<argLength;arg++) {
			document.WM.loadedImages[arg] = new Image();
			document.WM.loadedImages[arg].src = WM_preloadImages.arguments[arg];
		}
	}
}