// CEAC Random Image Script

	var startLetter = "A";
	var endLetter	= "R";

/* Start *********************** */

	function setRandomImages()
	{
		var randomLetter = getRandomLetter();
		
		// Set Images
		if (getElement("mainImage1"))
		{
		    getElement("mainImage1").src = "images/homepage/" + randomLetter + "1.jpg";
		}
		
		if (getElement("footerImage2"))
		{
		    getElement("footerImage2").src = "images/homepage/" + randomLetter + "2.jpg";
		}
		
		if (getElement("footerImage3"))
		{
		    getElement("footerImage3").src = "images/homepage/" + randomLetter + "3.jpg";
		}
		
		if (getElement("footerImage4"))
		{
		    getElement("footerImage4").src = "images/homepage/" + randomLetter + "4.jpg";
		}
		
		
	}

/* Get Random Letter * *******************************************************
 *
 *	TAKES:		NOTHING
 * 	RETURNS:	Random letter from the range defined by the global variables
 *				"startLetter" and "endLetter".
 *
 *************************************************************************/
 
	function getRandomLetter()
	{
		var startNumberCode = startLetter.charCodeAt(0); 
		var endNumberCode 	= endLetter.charCodeAt(0); 
		var codeOffset		= endNumberCode - startNumberCode;
		
		var randomOffsetCode = Math.floor(Math.random()*codeOffset);
		
		return String.fromCharCode(startNumberCode + randomOffsetCode);
	}