/**
 * @author Chris Merkel & Jonathan Dorsey 
 * @projectDescription Homepage Banner Image Rotator 
 */

function getBanner(userLevel, langroot){
	var theCPXImages = new Array() // Sets up the image files to be used.

	theCPXImages[0] = 'ui_homepage_banners_cpx_1.jpg'
	theCPXImages[1] = 'ui_homepage_banners_cpx_2.jpg'
	theCPXImages[2] = 'ui_homepage_banners_cpx_3.jpg'
	theCPXImages[3] = 'ui_homepage_banners_cpx_4.jpg'
	
	var theDSImages = new Array() // Sets up the image files to be used.
	
	theDSImages[0] = 'ui_homepage_banners_ds_1.jpg'
	theDSImages[1] = 'ui_homepage_banners_ds_2.jpg'
	theDSImages[2] = 'ui_homepage_banners_ds_3.jpg'
	theDSImages[3] = 'ui_homepage_banners_ds_4.jpg'
	
	var j = 0
	var p = 4;
	var preBuffer = new Array()
	for (i = 0; i < p; i++){
	   preBuffer[i] = new Image()
	   preBuffer[i].src = theCPXImages[i]
	}
	var whichImage = Math.round(Math.random()*(p-1)); // Randomize banner that gets displayed.
	var writedetails;
	var langroot = langroot + 'images/';
	if(userLevel == 'CPX'){
		writedetails = '<img id="homebanner" src="' + langroot + theCPXImages[whichImage] + '"' + 'border="0" alt="DocuShare CPX"/>';
	}else{
		writedetails = '<img id="homebanner" src="' + langroot + theDSImages[whichImage] + '"' + 'border="0" alt="DocuShare"/>';
	}
	document.write(writedetails);
}