function clearThis(field){
	if (field.defaultValue==field.value)
	field.value = ""
} 


function ScrollToShare(){
	var Xposition = 0;
	var Yposition = 0;	 	
			  
	Xposition += document.getElementById('sendform').offsetLeft;
	Yposition += document.getElementById('sendform').offsetTop;
	element = document.getElementById('sendform').offsetParent;											  
	window.scrollTo(Xposition,Yposition);	
	}
	
	
function validate_required(field,alerttxt)
{
	with (field)
	{
		if (value==null||value=="")
		  {alert(alerttxt);return false;}
		else {return true}
	}
}

function validate_form(thisform)
{
	with (thisform)
	{
	if (validate_required(yourEmail,"Please enter your email address.")==false)
		{yourEmail.focus();return false;}
	else if(validate_required(friendEmail,"Please enter your friend's email address.")==false)
		{friendEmail.focus();return false;}
	}
}