function KeyControl(obj)
	{    
		len = obj.value.length;
		result=""
		result1=""
		li_count1 = 0
		li_count0 = 0

        for (li_count=0; li_count<len; li_count++) 
		{
			if (obj.value.charAt(li_count) >= "0" && obj.value.charAt(li_count) <= "9")
			result = result + obj.value.charAt(li_count);
		}
		len = result.length;
		li_count = 0
        for (li_count=len-1; li_count>=0; li_count--) 
		{
			result1 = result.charAt(li_count) + result1;
			li_count1++;
			if ((li_count1 == 2 || li_count1 == 5 || li_count1 == 8 || li_count1 == 11 || li_count1 == 14 || li_count1 == 17 || li_count1 == 20) && (li_count1 < len) ) 
			{
				result1 = "." + result1;
			}					
		}				
		obj.value = result1;
	}