// JavaScript Document
function change_image(id,image)
{
		document.getElementById(id).src=image;
	
}



function fill(id, value)
{
	//alert(id);
	var field=document.getElementById(id).value;
	if(field=="")
	{
		//alert(id);
		document.getElementById(id).value = value;
	}
}


	
function checkEmail(){	
    var pattern=/^([a-zA-Z0-9_.-])+@([a-zA-Z0-9_.-])+\.([a-zA-Z])+([a-zA-Z])+/;
	var value=document.getElementById('email').value;
    if(pattern.test(value)){         
		return true;   
    }else{   
		alert("Email address is not valid");
		return false; 
    }
}