function top_buttons(obj, i) {

if (i==1) obj.style.background = "url('images/button_top_over.jpg')";
if (i==0) obj.style.background = "url('images/button_top.jpg')";

obj.style.backgroundPosition = "left";
obj.style.backgroundRepeat = "no-repeat";
}

function resize() {

height1 = window.screen.height;
i = 500;
if (navigator.userAgent.indexOf("MSIE")>0) i = 600;
height1 = height1 - i; 
document.getElementById("maincontent1").height = height1;
document.getElementById("maincontent1").style.valign = "top"


}

// ###############################################
function email_link(eml_alias, inline){
// ###############################################
	// Use this function to create email links and avoid email harvesting.

	document.write ('<a class="linkas" href="mailto:' + eml_alias + '@' + 'longcroftengineering.co.uk' + '">' + inline + '</a>');
	
}

var leftb = new Image;
leftb.src = 'images/button_top_over.jpg';