//cache menu icons
var icons = [
	'msicon-help',
	'msicon-help-rollover',
	'msicon-styles',
	'msicon-styles-rollover',
	'msicon-chart',
	'msicon-chart-rollover',
	'msicon-lightning',
	'msicon-lightning-rollover',
	'msicon-task',
	'msicon-task-rollover',
	'msicon-tools',
	'msicon-tools-rollover'
	];
	
var iconsLen = icons.length;
var imgs = [];

for(var i=0; i < iconsLen; i++)
{
	imgs[i] = new Image;
	imgs[i].src = '/udm-resources/' + icons[i] + '.gif';
}