function selectelement(strid)
{
	document.getElementById(strid).select();
}

function isDate(obj)
{ 
	cDate = obj; 
	dSize = cDate.length; 
	sCount= 0; 
	ySize=0;
	ok = false ;
	for(var i=0; i < dSize; i++) (cDate.substr(i,1) == "-") ? sCount++ : sCount; 
	if (sCount != 2)
	{ 
	 	return false; 
	}
	
	//检测输入的年份是2位数还是4位数； 
	ySize = cDate.substring(0,cDate.indexOf("-")).length 
	
	if(ySize!=4)
	{
	 	return false; 
	}
	//将输入的日期字符串分隔成3部分 (Month, Day & Year) 
	idxBarI = cDate.indexOf("-"); 
	idxBarII= cDate.lastIndexOf("-"); 
	strY = cDate.substring(0,idxBarI); 
	strM = cDate.substring(idxBarI+1,idxBarII); 
	strD = cDate.substring(idxBarII+1,dSize); 
	
	strM = (strM.length < 2 ? '0'+strM : strM); 
	strD = (strD.length < 2 ? '0'+strD : strD); 
	if(strY.length == 2) strY = (strY > 50 ? '19'+strY : '20'+strY); 
	return true;
}

function incDate(obj)
{
//	cdate= obj;
//	day= cdate.getdate+1;
//	year= cdate.getyear
//	return obj+1;
	alert(obj);
	cdate= new Date();
	cdate.setDate(obj);
	alert(cdate.toDateString());
}

function isNumber(obj){
  nr1=obj; 
  if (nr1!=null){
    for (var i=0;i<nr1.length;i++){ 
     cmp="0123456789" 
     tst=nr1.substring(i,i+1) 
     if (cmp.indexOf(tst)<0) {return false}
    }
  }
  
  return true 
}

function checkemail(obj)
{
	var pattern =  /^[a-zA-Z0-9_.]{1,}\+?[a-zA-Z0-9_.]{1,}@[a-zA-Z0-9_]{1,}(.[a-zA-Z0-9_]+)+$/;
	var strvalue=obj;
	if(strvalue.match(pattern)==null)
	{
		return false;
	}else
	{
		return true;
	}
}


function $(elementID){return document.getElementById(elementID);}