ECRAN QUI PASSE EN DIFFERENTES COULEURS A VOTRE ARRIVÉE SUR UN SITE!!!

<SCRIPT language=JavaScript type=text/javascript>
document.bgcolor="#000000" 
var hexchars="0123456789ABCDEF";
function fromHex (str) {
var high=str.charAt(0);
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="#0000FF";
color_start1=col_value.substring(1,8);
col_value="#00FFFF";
color_start2=col_value.substring(1,8);
col_value="#0000FF";
color_start3=col_value.substring(1,8);
col_value="#00FFFF"; 
color_start4=col_value.substring(1,8);
col_value="#ff0000";
color_start5=col_value.substring(1,8);
col_value="#FFFF00";  
color_start6=col_value.substring(1,8);
col_value="#FF9900";
color_start7=col_value.substring(1,8);
col_value="#FF99CC";
color_start8=col_value.substring(1,8);
col_value="#660000";
color_start9=col_value.substring(1,8);
col_value="#333366";
color_start10=col_value.substring(1,8);
col_value="#FF0000";
color_start11=col_value.substring(1,8);
col_value="#FFFF00";
color_start12=col_value.substring(1,8);
col_value="#FF9900";    
color_end1=col_value.substring(1,8);
col_value="#0000FF"; 
color_end2=col_value.substring(1,8);
col_value="#FF0000"; 
color_end3=col_value.substring(1,8);
col_value="#2d2d84"; 
color_end3=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 fadein1() { 
fade(Color(color_start1).r,Color(color_start1).g,Color(color_start1).b,Color(color_end1).r,Color(color_end1).g,Color(color_end1).b,20); 
}
function fadein2() {
	fade(Color(color_start2).r,Color(color_start2).g,Color(color_start2).b,Color(color_end2).r,Color(color_end2).g,Color(color_end2).b,20); 
}
function fadein3() {
	fade(Color(color_start3).r,Color(color_start3).g,Color(color_start3).b,Color(color_end3).r,Color(color_end3).g,Color(color_end3).b,20); 
}
fadein1();
fadein2();
fadein3();
</SCRIPT>