function btnConform(){
	var inputs = document.getElementsByTagName("input");
	var btn1 = inputs.submit;
	var btn2 = inputs.reset;
	var btn3 = inputs.search;

	if(btn1){
		btn1.onmouseover = function(){
			btn1.style.backgroundPosition = 'left bottom';
			return false;
		}
		btn1.onmouseout = function(){
			btn1.style.backgroundPosition = 'left top';
			return false;
		}
	}
	if(btn2){
		btn2.onmouseover = function(){
			btn2.style.backgroundPosition = 'left bottom';
			return false;
		}
		btn2.onmouseout = function(){
			btn2.style.backgroundPosition = 'left top';
			return false;
		}
	}
	if(btn3){
		btn3.onmouseover = function(){
			btn3.style.backgroundPosition = 'left bottom';
			return false;
		}
		btn3.onmouseout = function(){
			btn3.style.backgroundPosition = 'left top';
			return false;
		}
	}
}
window.onload = btnConform;