// JavaScript Document
function makeFieldEmpty(p)
{
	p.value = "";
}

function makeFieldDummyText(p)
{
	p.value = "Search...";
}

// JavaScript Document
var ck_username = /^[A-Za-z0-9_]{1,20}$/;
var valid_phone= /^\d{3}-\d{3}-\d$/;  

function trim(str)
{  
	while(str.charAt(0) == (" ") )
	{  
		str = str.substring(1);
	}
	while(str.charAt(str.length-1) == " " )
	{  
		str = str.substring(0,str.length-1);
	}
	
	return str;
}

function validateEmail(inputvalue)
{	
    var pattern=/^([a-zA-Z0-9_.-])+@([a-zA-Z0-9_.-])+\.([a-zA-Z])+([a-zA-Z])+/;
	
    if(pattern.test(inputvalue))
	{         
		return true;
    }else{   
		return false;
    }

	return true;
}

function validateUserID(inputvalue)
{
	if ( ck_username.test(inputvalue)) 
	{
		return true;
	}else{   
		return false;
    }

	return true;
}

function validatePhone( phoneVal )
{
	if (valid_phone.test(phoneVal) )
	{  
		return true;
	}else{
		return false;
	}
	
	return true;
}