var newColor;
var oldColor;
function changecolor(id){	
	obj=document.getElementById(id);
	newColor=oldColor;
	oldColor=obj.style.backgroundColor;	
	if((obj.style.backgroundColor=='#fddab8')||(obj.style.backgroundColor=='rgb(253, 218, 184)')){
		obj.style.backgroundColor=newColor;
	}
	else{
		obj.style.backgroundColor='#fddab8';
	}	
}