var agt=navigator.userAgent.toLowerCase();
var is_ie = ((agt.indexOf("msie") != -1) && (agt.indexOf("opera") == -1));

	var InstallUrl = "http://www.vengine.com/products/vengine/index.html";

	var READYSTATE_UNINITIALIZED  = 0;
	var READYSTATE_LOADING        = 1;
	var READYSTATE_LOADED         = 2;
	var READYSTATE_INTERACTIVE    = 3;
	var READYSTATE_COMPLETE       = 4;

	var bDownloadError = false;
 
	function PromptVEInstall_onError(){
		bDownloadError = true;
		// Not currently installed so prompt
		DoInstallPromp();
		return true;
	}

	function PromptVEInstall_onReadyStateChange(vVersion){
		if (bDownloadError) {
			return;
		}
		if (event.srcElement.readyState == READYSTATE_COMPLETE){
		if (vVersion != PromptVEInstall.ProductVersion){
			DoUpgradePromp();
			}else{
			ShowGraphic();
			}
		}
		return true;
	}       

	function DoInstallPromp(){
		oVEInstallText.innerHTML="<a href=\"cvc_download.html\"><img src=\"style/images/cvc/cvc_anim.gif\" /></a>";
	}
	function ShowGraphic(){
		oVEInstallText.innerHTML="<a href=\"cvc_index.html\"><img src=\"style/images/cvc/cvc_tl.gif\" /></a>";
	}
	function DoUpgradePromp(){
		oVEInstallText.innerHTML+="<a href=\"cvc_download.html\">click here</a>";
		oVEInstallText.innerHTML="<a href=\"cvc_download.html\"><img src=\"style/images/cvc/cvc_anim_upgrade.gif\" /></a>";
	}