function doAction(act,form) {
//    document.forms[0].action.value = act;
//    document.forms[0].submit();
    if(form==null){
	form=document.forms[0];
	}
    form.action.value = act;
    form.submit();
}
function showMsg(msg){
	alert(msg);
}
function getParameter(name){
	var url=window.location.search; 
	if(url.indexOf("?")!=-1){ 
	var str = url.substr(1) 
	strs = str.split("&"); 
	for(i=0;i<strs.length;i++) 
	{if(strs[i].split("=")[0]==name)
	return unescape(strs[i].split("=")[1]); 
	} 
	}
	return "";	
}