//part
function blank(obj,str){
	if(str=="")
	obj.value="";
	else
	obj.value=str;
}
function re(obj,str){
	obj.value=str;
}
function change(obj,path){
	obj.src=path;

}


 function showMenu(obj){
	 var e = document.getElementById(obj);
	 if(e.style.display=="none"){
	 	e.style.display="block";
	 }else{
		 e.style.display="none";
	 }
 }


/*½ûÖ¹¸´ÖÆ*/

function onKeyDown()
{
	if ((event.keyCode==116)||(window.event.ctrlKey)||(window.event.shiftKey)||(event.keyCode==122))
	{
	event.keyCode=0;
	event.returnValue=false;
	}
}

function yxl() { 
if(window.event.altKey) 
{
window.event.returnValue=false;
}
}
document.onkeydown=yxl