Re: java for background

> Hi
> I was wondering if there is a way to use a Javascript to change a black
> background, into a white one.

Dorine

Here is a script I use to fade from white to black.  Just change the color
values.

HTH

/Garry

Garry W. Harrell, IMC
www.ardmoreonline.com
Need a computer?
www.handtech.com/garry





<SCRIPT language="JavaScript" type="text/javascript">
<!-- Fade-in script by Bernhard Friedrich

/*************************************************************
 * fade script ver0.1 by Kouichirou(at)Eto.com 1996/02/20
 * Copyright (c) 1996 Kouichirou Eto. All Rights Reserved.
 * You can freely copy, use, modify this script,
 * if the credit is given in the source.
 */

document.bgcolor="#000000"

var hexchars="0123456789ABCDEF";
function fromHex (str) {
var high=str.charAt(0); file://Note: Netscape 2.0 bug workaround


var low=str.charAt(1);
return(16*hexchars.indexOf(high))+hexchars.indexOf(low);
}

function Color(str){
 this.r=fromHex(str.substring(0,2));
 this.g=fromHex(str.substring(2,4));
 this.b=fromHex(str.substring(4,6));
 return this;
 }
col_value="#FFFFFF";
color_start=col_value.substring(1,8);
col_value="#000000";
color_end=col_value.substring(1,8);

function makearray(n)

    this.length = n;
    for(var i = 1; i <= n; i++)
        this[i] = 0;
    return this;
}

hexa = new makearray(16);
for(var i = 0; i < 10; i++)
    hexa[i] = i;
hexa[10]="a"; hexa[11]="b"; hexa[12]="c";
hexa[13]="d"; hexa[14]="e"; hexa[15]="f";

function hex(i) {
    if (i < 0)
        return "00";
    else if (i > 255)
        return "ff";
    else
        return "" + hexa[Math.floor(i/16)] + hexa[i%16];
}

function setbgColor(r, g, b) {
    var hr = hex(r); var hg = hex(g); var hb = hex(b);
    document.bgColor = "#"+hr+hg+hb;
}

function fade(sr, sg, sb, er, eg, eb, step) {
    for(var i = 0; i <= step; i++) {
        setbgColor(
        Math.floor(sr * ((step-i)/step) + er * (i/step)),
        Math.floor(sg * ((step-i)/step) + eg * (i/step)),
        Math.floor(sb * ((step-i)/step) + eb * (i/step)));
    }
}

function fadein() {

fade(Color(color_start).r,Color(color_start).g,Color(color_start).b,Color(co
lor_end).r,Color(color_end).g,Color(color_end).b,55);
}

/* do fadein */
fadein();

/***** end fade script *****/
/************************************************************/


// -->
</SCRIPT>

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