function ParamPair ( navn , vaerdi )
{ // egenskaber
    this.navn   = navn
    this.vaerdi = vaerdi
}

function ParseParameters ()
{
var i , j , k , l , m , n
var fundet , ParseValue

    if  (ParseParameters.arguments.length == 0)
    {   var NbrParameters = 0
        for ( i=0 ; i<this.length ; i++ )
        {   if  (this[i] == "=") { NbrParameters++ } }
        return NbrParameters
    }
    else
    {   switch  ( typeof( ParseParameters.arguments[0] ) )
        { case  "number" : 
                ParseValue = new ParamPair ; ParseValue.navn = " " ; ParseValue.vaerdi = -1
                i = this.indexOf("?") ; l = 0
                while ( i != -1 && l<ParseParameters.arguments[0] ) { i = this.indexOf(";",i+1) ; l++ }
                if ( i != -1 )
                {   j = this.indexOf("=",i)
                    k = ( this.indexOf(";",i) == -1 ? this.length : this.indexOf(";",i) )
                    ParseValue.navn   = this.substring(i+1,j)
                    ParseValue.vaerdi = this.substring(j+1,k)
                }
                return ParseValue ; break ;
          case  "string" : 
                ParseValue = -1
                i = this.indexOf("?") ; j = this.indexOf("=") ; fundet = false
                while  ( i != -1 && j!= -1 && !fundet)
                {
                    if  ( this.substring(i+1,j) == ParseParameters.arguments[0] )
                    {
                        k = ( this.indexOf(";",j) == -1 ? this.length : this.indexOf(";",j) )
                        ParseValue = this.substring(j+1,k)
                        fundet = true
                    }
                    else
                    {
                        i = this.indexOf(";",i+1) ; j = this.indexOf("=",j+1)
                    }
                }
                return ParseValue ; break ;
          default      :
                return -1 ;
        }
    }
} String.prototype.parse = ParseParameters

function  EditParameters ()
{   
var i , j , k , l , m , n
var returner = this
var halvdel1 , halvdel2

    if  ( EditParameters.arguments.length == 0 )  // fjern alle parametrene
    {
        returner = ( ( returner.indexOf("?") == -1 ) ? returner : returner.substring(0,returner.indexOf("?")-1) )
    }

    if  ( EditParameters.arguments.length == 1 )  // fjern en enkelt parameter
    {
        switch (typeof( EditParameters.arguments[0] ) )
        { case  "number" :
                return 0 ; break ;
          case  "string" :
                return 0 ; break ;
          default      :
                return -1 ;
        }
    }
    
    if  ( EditParameters.arguments.length % 2 == 0 )  // ny v¾rdi til en eller flere parametre
    {
    for ( n = 0 ; n < EditParameters.arguments.length ; n += 2 )
    {   fundet = false
        i = returner.indexOf("?") ; j = returner.indexOf("=")
        switch ( typeof( EditParameters.arguments[n] ) )
        { case  "number" :
                break  ;
          case  "string" :
                while  ( i != -1 && j!= -1 && !fundet )
                {   if  ( returner.substring(i+1,j) == EditParameters.arguments[n] )
                    {
                        halvdel1 = returner.substring(0,j+1)
                        halvdel2 = ( (returner.indexOf(";",j) == -1)
                                   ? ""
                                   : returner.substring(returner.indexOf(";",j),returner.length) )
                        returner = halvdel1 + EditParameters.arguments[n+1] + halvdel2
                        fundet = true
                    }
                    else
                    {
                        i = returner.indexOf(";",i+2) ; j = returner.indexOf("=",j+2)
                    }
                }
                if  ( i == -1 || !fundet )
                {
                    returner += ( i == -1 ? "?" : ";" )
                    returner += EditParameters.arguments[n]
                    returner += "="
                    returner += EditParameters.arguments[n+1]
                }
                break  ;
          default      :
                returner = -1 ;
        } } return returner
    }

} String.prototype.param = EditParameters