function blockNumbers(e)
{
	
	var key;
	var keychar;
	var reg;
	
	if(window.event) {
		// for IE, e.keyCode or window.event.keyCode can be used
		key = e.keyCode; 
	}
	else if(e.which) {
		// netscape
		key = e.which; 
	}
	else {
		// no event, so pass through
		return true;
	}

	keychar = String.fromCharCode(key);	

	if ( (key>=48 &&  key<=57) || (key==46) || (key==45) || (key==34) || (key==39) || (key==32) ||(key==43))
	{
		return true;
	}
	else
	{
		return false;
	}
}