function isIE(){
	var browserName=navigator.appName; 

	 if (browserName.indexOf("icrosoft")!=-1) return true;
	 else return false;
}


function openChatApp()
{
	//openWindow('chatApp.jsp',925,665,'sdgChatApp');
	window.location = "chatApp.jsp";
}

function showRegistration()
{
	//openWindow('beta.jsp',925,665,'sdgRegistration');
  window.location = "beta.jsp";
}

function openWindow(url,w,h,title)
{
    leftPosition = (screen.width) ? (screen.width-w)/3 : 0;
    topPosition = (screen.height) ? (screen.height-h)/3 : 0;
	if(topPosition>100) topPosition=80;
	
//	topPosition = topPosition - 80;
	if(isIE()) {
		w=w+0;
    }
    win = window.open(url,title,'height='+h+',width='+w+',top='+topPosition+',left='+leftPosition+',scrollbars=0,location=0,resizable=0');
	win.focus();
}