window.onload=function ()
{
	var oDiv=document.getElementById('div1');
	var aBtn=oDiv.getElementsByTagName('input');
	var aDiv=oDiv.getElementsByTagName('div');
	var arrColor = ['yellow','red','pink','green','#000','#666','#fff','#f60'];
	
	for(var i=0;i<aBtn.length;i++)
	{
		aBtn[i].index=i;
		aBtn[i].onclick=function ()
		{

			console.log(this.index);
			for(var i=0;i<aBtn.length;i++){
				aDiv[i].style.display = 'none';
			}
			aBtn[this.index].style.backgroundColor = arrColor[this.index];
			aDiv[this.index].style.display = 'block';
		};
	}
};