function ShowMenu(obj,noid){
	var block =	document.getElementById(noid);
	var n = noid.substr(noid.length-1);
	if(noid.length<4){
		var span = document.getElementById("leftmenu").getElementsByTagName("span");
		var h2 = document.getElementById("leftmenu").getElementsByTagName("h2");
		for(var i=0; i<h2.length;i++){
			h2[i].innerHTML = h2[i].innerHTML.replace("-","+");
		}
		for(var i=0; i<span.length; i++){if(i!=n){span[i].className = "no";}}
	}
	if(block.className == "no"){
		block.className = "";
		obj.innerHTML = obj.innerHTML.replace("+","-");
	}else{
		block.className = "no";
	}
}



function displaySubMenu(li) { 
var subMenu = li.getElementsByTagName("ul")[0]; 
subMenu.style.display = "block"; 
} 
function hideSubMenu(li) { 
var subMenu = li.getElementsByTagName("ul")[0]; 
subMenu.style.display = "none"; 
} 

function choose_curr(v){
document.currencies_top.currency.value=v;
document.currencies_top.submit();
}

function isEmail(str) {   
        var re = /^([a-zA-Z0-9]+[_|\-|\.]?)*[a-zA-Z0-9]+@([a-zA-Z0-9]+[_|\-|\.]?)*[a-zA-Z0-9]+\.[a-zA-Z]{2,3}$/;   
        return re.test(str);   
    } 
	function isEmailSpan(id) {   
        var val = document.getElementById(id);   
        if (!this.isEmail(val.value)) {   
            val.select();   
            var str = "Please enter a valid email address!";   
           	alert(str);  
            return false;   
        } else {    
            return true;   
        }   
    }