// JavaScript Document

function roll(img_name, img_src)
		{
   document[img_name].src = img_src;
		}

	
	
	
	
function preloader() 
{
	 //counter
	 var i = 0;
	 //create object
	 imageObj = new Image();
	 //set image list
	 images = new Array();
	 images[0]="images/site/chart1.jpg";
	 images[1]="images/site/chart2.jpg";
	 // start preloading
	 for(i=0; i<=1; i++)
	 { imageObj.src=images[i]; }
 
}