페이드 스크립트

<SCRIPT LANGUAGE="JavaScript">

 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 (255 < i)
         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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