function clickButton(e, buttonid)
{ 
	var bt = document.getElementById(buttonid); 
	if (typeof bt == 'object')
	{ 
			if(navigator.appName.indexOf("Netscape")>(-1))
			{ 
				if (e.keyCode == 13)
				{ 
						bt.click(); 
						return false; 
				} 
			} 
			if (navigator.appName.indexOf("Microsoft Internet Explorer")>(-1))
			{
				if (event.keyCode == 13)
				{ 
					bt.click();
					return false; 
				} 
			} 
	} 
} 

function clickButton2(UniqueID)
{
	if(event.which || event.keyCode)
	{
		if ((event.which == 13) || (event.keyCode == 13)) 
		{
			document.getElementById(UniqueID).click();
			return false;
		}
		else 
		{
		return true;
		}
	}
}