When i was trying to get rid of my ugly Runscape logo i found somting look to pics ->
normal when you want to add a background you need to do it like this :

But i found the way to do it like everyone want to do it :

kk now you want to know what did i do ?
Go to Client file
search for : public final void method56(int i)
now you need to find this whole block end qoute it out or delete it :
Code:
aClass15_1110.method237(0);
class30_sub2_sub1_sub1.method346(382, 0, -32357);
aClass15_1111.method237(0);
class30_sub2_sub1_sub1.method346(-255, 0, -32357);
aClass15_1107.method237(0);
class30_sub2_sub1_sub1.method346(254, 0, -32357);
aClass15_1108.method237(0);
class30_sub2_sub1_sub1.method346(180, -371, -32357);
aClass15_1109.method237(0);
class30_sub2_sub1_sub1.method346(180, -171, -32357);
aClass15_1112.method237(0);
class30_sub2_sub1_sub1.method346(382, -265, -32357);
aClass15_1113.method237(0);
class30_sub2_sub1_sub1.method346(-180, -265, -32357);
aClass15_1114.method237(0);
class30_sub2_sub1_sub1.method346(254, -171, -32357);
aClass15_1115.method237(0);
if(i != 0)
{
return;
} else
{
class30_sub2_sub1_sub1.method346(-180, -171, -32357);
class30_sub2_sub1_sub1 = new Class30_Sub2_Sub1_Sub1(aClass44_1053, "logo", 0);
aClass15_1107.method237(0);
class30_sub2_sub1_sub1.method348(382 - class30_sub2_sub1_sub1.anInt1440 / 2 - 128, 16083, 18);
class30_sub2_sub1_sub1 = null;
Object obj = null;
Object obj1 = null;
System.gc();
return;
}
}
now you whil have this left :
Code:
public final void method56(int i)
{
byte abyte0[] = aClass44_1053.method571("title.dat", null);
Class30_Sub2_Sub1_Sub1 class30_sub2_sub1_sub1 = new Class30_Sub2_Sub1_Sub1(abyte0, this);
aClass15_1110.method237(0);
class30_sub2_sub1_sub1.method346(0, 0, -32357);
aClass15_1111.method237(0);
class30_sub2_sub1_sub1.method346(-637, 0, -32357);
aClass15_1107.method237(0);
class30_sub2_sub1_sub1.method346(-128, 0, -32357);
aClass15_1108.method237(0);
class30_sub2_sub1_sub1.method346(-202, -371, -32357);
aClass15_1109.method237(0);
class30_sub2_sub1_sub1.method346(-202, -171, -32357);
aClass15_1112.method237(0);
class30_sub2_sub1_sub1.method346(0, -265, -32357);
aClass15_1113.method237(0);
class30_sub2_sub1_sub1.method346(-562, -265, -32357);
aClass15_1114.method237(0);
class30_sub2_sub1_sub1.method346(-128, -171, -32357);
aClass15_1115.method237(0);
class30_sub2_sub1_sub1.method346(-562, -171, -32357);
int ai[] = new int[class30_sub2_sub1_sub1.anInt1440];
for(int j = 0; j < class30_sub2_sub1_sub1.anInt1441; j++)
{
for(int k = 0; k < class30_sub2_sub1_sub1.anInt1440; k++)
ai[k] = class30_sub2_sub1_sub1.anIntArray1439[(class30_sub2_sub1_sub1.anInt1440 - k - 1) + class30_sub2_sub1_sub1.anInt1440 * j];
for(int l = 0; l < class30_sub2_sub1_sub1.anInt1440; l++)
class30_sub2_sub1_sub1.anIntArray1439[l + class30_sub2_sub1_sub1.anInt1440 * j] = ai[l];
}
add 1 extra } below it other while you will get a error 
100% by my brains end by my lucky life