function btnConform(){
	var inputs = document.getElementsByTagName("input");
	for( var i=0,j=inputs.length; i<j; i++){
		var btn = inputs[i]; 
		if(btn.getAttribute("class") ){
			if(btn.getAttribute("class") == "submit-search"){
				btn.onmouseover = function(){
					btn.style.backgroundPosition = 'left -20px';
					return false;
				}
				btn.onmouseout = function(){
					btn.style.backgroundPosition = 'left top';
					return false;
				}
			}
		}
		else if(btn.getAttribute("className")){
			if(btn.getAttribute("className") == "submit-search"){
				btn.onmouseover = function(){
					btn.style.backgroundPosition = 'left -20px';
					return false;
				}
				btn.onmouseout = function(){
					btn.style.backgroundPosition = 'left top';
					return false;
				}
			}
		}
	}
}

window.onload = btnConform;