// JavaScript Document
function onlyNum(){
	if(!((event.keyCode>=48&&event.keyCode<=57)||(event.keyCode>=96&&event.keyCode<=105)))
	//考虑小键盘上的数字键
	event.returnvalue=false;
}

function isEmail(strEmail) {
	if (strEmail.search(/^\w+((-\w+)|(\.\w+))*\@[A-Za-z0-9]+((\.|-)[A-Za-z0-9]+)*\.[A-Za-z0-9]+$/) != -1){
		return true;
	}else{
		return false;
	}
}

function isNumber(String)
{  
	var Letters = "1234567890-"; //可以自己增加可输入值
	var i;
	var c;
	if(String.charAt( 0 )=='-')
		return false;
	if( String.charAt( String.length - 1 ) == '-' )
		return false;
	for( i = 0; i < String.length; i ++ )
	{  
	c = String.charAt( i );
		if (Letters.indexOf( c ) < 0)
			return false;
	}
	return true;
}

function isEnglish(name) //英文值检测
{  
	if(name.length == 0)
		return false;
	for(i = 0; i < name.length; i++) {  
		if(name.charCodeAt(i) > 128)
		return false;
	}
	return true;
}