var zChar = new Array(' ', '(', ')', '-', '.');
var maxphonelength = 13;
var phonevalue1;
var phonevalue2;
var cursorposition;

function ParseForNumber1(object)
{
    phonevalue1 = ParseChar(object.value, zChar);
}

function ParseForNumber2(object)
{
    phonevalue2 = ParseChar(object.value, zChar);
}

function backspacerUP(object, e) 
{
    if(e)
    {
        e = e;
    } 
    else 
    {
        e = window.event;
    }

    if(e.which)
    {
        var keycode = e.which;
    } 
    else 
    {
        var keycode = e.keyCode;
    }

    ParseForNumber1(object);

    if(keycode >= 48)
    {
        ValidatePhone(object);
    }
}

function backspacerDOWN(object, e) 
{
    if(e)
    {
        e = e;
    } 
    else 
    {
        e = window.event;
    }
    
    if(e.which)
    {
        var keycode = e.which;
    } 
    else 
    {
        var keycode = e.keyCode;
    }

    ParseForNumber2(object);
}

function GetCursorPosition()
{
    var t1 = phonevalue1;
    var t2 = phonevalue2;
    var bool = false;
    
    for (i=0; i<t1.length; i++)
    {
        if (t1.substring(i,1) != t2.substring(i,1)) 
        {
            if(!bool) 
            {
                cursorposition=i;
                bool=true;
            }
        }
    }
}

function ValidatePhone(object)
{
    var p = phonevalue1;

    p = p.replace(/[^\d]*/gi,"");

    if (p.length < 3) 
    {
        object.value = p;
    } 
    else if(p.length==3)
    {
    pp = p;
    d4 = p.indexOf('(');
    d5 = p.indexOf(')');
    
    if(d4==-1)
    {
        pp = "(" + pp;
    }
    
    if(d5==-1)
    {
        pp = pp + ")";
    }
    
        object.value = pp;
    } 
    else if(p.length > 3 && p.length < 7)
    {
        p ="(" + p;
        l30 = p.length;
        p30 = p.substring(0,4);
        p30 = p30+")";

        p31 = p.substring(4,l30);
        pp = p30+p31;

        object.value = pp;

    } 
    else if(p.length >= 7)
    {
        p = "(" + p;
        l30 = p.length;
        p30 = p.substring(0,4);
        p30 = p30 + ")";

        p31 = p.substring(4,l30);
        pp = p30 + p31;

        l40 = pp.length;
        p40 = pp.substring(0,8);
        p40 = p40 + "-";

        p41 = pp.substring(8,l40);
        ppp = p40 + p41;

        object.value = ppp.substring(0, maxphonelength);
    }

    GetCursorPosition();

    if(cursorposition >= 0)
    {
        if (cursorposition == 0) 
        {
            cursorposition = 2;
        } 
        else if (cursorposition <= 2) 
        {
            cursorposition = cursorposition + 1;
        }
        else if (cursorposition <= 5) 
        {
            cursorposition = cursorposition + 2;
        }
        else if (cursorposition == 6) 
        {
            cursorposition = cursorposition + 2;
        }
        else if (cursorposition == 7)
        {
            cursorposition = cursorposition + 4;
            e1 = object.value.indexOf(')');
            e2 = object.value.indexOf('-');
            
            if (e1 > -1 && e2 > -1)
            {
                if (e2 - e1 == 4) 
                {
                    cursorposition = cursorposition - 1;
                }
            }
        } 
        else if (cursorposition < 11) 
        {
            cursorposition = cursorposition + 3;
        }
        else if (cursorposition == 11)
        {
            cursorposition = cursorposition + 1;
        }
        else if (cursorposition >= 12) 
        {
            cursorposition = cursorposition;
        }

        //var txtRange = object.createTextRange();
        //txtRange.moveStart("character", cursorposition);
        //txtRange.moveEnd("character", cursorposition - object.value.length);
        //txtRange.select();
    }

}

function ParseChar(sStr, sChar)
{
    if (sChar.length == null)
    {
        zChar = new Array(sChar);
    }
    else 
    {
        zChar = sChar;
    }
    
    for (i = 0; i < zChar.length; i++)
    {
        sNewStr = "";

        var iStart = 0;
        var iEnd = sStr.indexOf(sChar[i]);

        while (iEnd != -1)
        {
            sNewStr += sStr.substring(iStart, iEnd);
            iStart = iEnd + 1;
            iEnd = sStr.indexOf(sChar[i], iStart);
        }
        
        sNewStr += sStr.substring(sStr.lastIndexOf(sChar[i]) + 1, sStr.length);
        sStr = sNewStr;
    }

    return sNewStr;
}