function ch(par,par2,par3){
if(par==1){
document.getElementById(par2).style.background="url(uploads/images/btn1_2.jpg)";
document.getElementById(par3).src="uploads/images/btn1_1.jpg";
}
else{
document.getElementById(par2).style.background="url(uploads/images/btn2_2.jpg)";
document.getElementById(par3).src="uploads/images/btn2_1.jpg";
}
}