Fade In Script

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3. Fade In Script

<script>
/************************************************************

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)));
}
}

/* Usage:
* fade(inr,ing,inb, outr,outg,outb, step);
* example.
* fade(0,0,0, 255,255,255, 255);
* fade from black to white with very slow speed.
* fade(255,0,0, 0,0,255, 50);
* fade(0xff,0x00,0x00, 0x00,0x00,0xff, 50); // same as above
* fade from red to blue with fast speed.
* step 2 is very fast and step 255 is very slow.
*/

function fadein() {
fade(255,255,255, 0,0,0, 64);
}

function fadeout() {
/*fade(0,0,0, 255,255,255, 64); */
}

/* do fadein */
fadein();

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

</script


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