// use the following call in a textbox tag:
// onkeypress="if((event.which && event.which == 13) || (event.keyCode && event.keyCode == 13)) {ClickButton(event,'BUTTON NAME HERE');return(false);}"


function ClickButton(e, LinkToClick) 
{ 
	var i = 0; 

	while (i < document.forms(0).elements.length) 
	{ 
		if (document.forms(0).elements(i).name.indexOf(LinkToClick) > -1) 
		{ 
			document.forms(0).elements(i).click(); 
			return (true); 
		} 

		i++; 
	} 
	
	i=0; 
	
	while (i < document.links.length) 
	{ 
		if (document.links.item(i).id.toString().indexOf(LinkToClick) > -1) 
		{ 
			document.links.item(i).click(); 
			return (true); 
		} 
		i++; 
	} 

	var obj = document.getElementById(LinkToClick);
	if (!obj)
		obj = document.all ? document.all[LinkToClick] : null;
	if (obj)
	obj.click();
	return (false); 
}