// BROW CHECK
var ns6 = (!document.all && document.getElementById);
var ie4 = (document.all);

// ROLL
if (ns6 || ie4) {
if (document.images) {
// DEFINE IMAGE ARRAY
var im = new Array();
var imag = new Array();
//
imag[0]  = "http://www.mrplanthire.co.uk/images/button-company-profile.gif"
imag[1]  = "http://www.mrplanthire.co.uk/images/button-company-profile_.gif"
imag[2]  = "http://www.mrplanthire.co.uk/images/button-contact-us.gif"
imag[3]  = "http://www.mrplanthire.co.uk/images/button-contact-us_.gif"
imag[4]  = "http://www.mrplanthire.co.uk/images/button-location-delivery.gif"
imag[5]  = "http://www.mrplanthire.co.uk/images/button-location-delivery_.gif"
imag[6]  = "http://www.mrplanthire.co.uk/images/button-trade-links.gif"
imag[7]  = "http://www.mrplanthire.co.uk/images/button-trade-links_.gif"
imag[8]  = "http://www.mrplanthire.co.uk/images/product-nav-desc.gif"
imag[9]  = "http://www.mrplanthire.co.uk/images/product-nav-desc-tab2-over.gif"
imag[10] = "http://www.mrplanthire.co.uk/images/product-nav-desc.gif"
imag[11] = "http://www.mrplanthire.co.uk/images/product-nav-desc-tab3-over.gif"
imag[12] = "http://www.mrplanthire.co.uk/images/product-nav-spec.gif"
imag[13] = "http://www.mrplanthire.co.uk/images/product-nav-spec-tab1-over.gif"
imag[14] = "http://www.mrplanthire.co.uk/images/product-nav-spec.gif"
imag[15] = "http://www.mrplanthire.co.uk/images/product-nav-spec-tab3-over.gif"
imag[16] = "http://www.mrplanthire.co.uk/images/product-nav-hire.gif"
imag[17] = "http://www.mrplanthire.co.uk/images/product-nav-hire-tab1-over.gif"
imag[18] = "http://www.mrplanthire.co.uk/images/product-nav-hire.gif"
imag[19] = "http://www.mrplanthire.co.uk/images/product-nav-hire-tab2-over.gif"
imag[20]  = "http://www.mrplanthire.co.uk/images/button-home.gif"
imag[21]  = "http://www.mrplanthire.co.uk/images/button-home_.gif"
imag[22]  = "http://www.mrplanthire.co.uk/images/lift-boom-2.gif"
imag[23]  = "http://www.mrplanthire.co.uk/images/lift-boom-2.gif"
imag[24]  = "http://www.mrplanthire.co.uk/images/lift-boom-3.gif"
imag[25]  = "http://www.mrplanthire.co.uk/images/lift-boom-3.gif"
imag[26]  = "http://www.mrplanthire.co.uk/images/lift-boom-4.gif"
imag[27]  = "http://www.mrplanthire.co.uk/images/lift-boom-4.gif"
imag[28]  = "http://www.mrplanthire.co.uk/images/lift-boom-5.gif"
imag[29]  = "http://www.mrplanthire.co.uk/images/lift-boom-5.gif"
imag[30]  = "http://www.mrplanthire.co.uk/images/lift-boom-6.gif"
imag[31]  = "http://www.mrplanthire.co.uk/images/lift-boom-6.gif"
imag[32]  = "http://www.mrplanthire.co.uk/images/lift-boom-7.gif"
imag[33]  = "http://www.mrplanthire.co.uk/images/lift-boom-7.gif"
imag[34]  = "http://www.mrplanthire.co.uk/images/lift-boom-1.gif"
imag[35]  = "http://www.mrplanthire.co.uk/images/lift-boom-1.gif"
imag[36]  = "http://www.mrplanthire.co.uk/images/lift-scissor-1.gif"
imag[37]  = "http://www.mrplanthire.co.uk/images/lift-scissor-1.gif"
imag[38]  = "http://www.mrplanthire.co.uk/images/lift-scissor-2.gif"
imag[39]  = "http://www.mrplanthire.co.uk/images/lift-scissor-2.gif"
imag[40]  = "http://www.mrplanthire.co.uk/images/lift-scissor-3.gif"
imag[41]  = "http://www.mrplanthire.co.uk/images/lift-scissor-3.gif"
imag[42]  = "http://www.mrplanthire.co.uk/images/lift-scissor-4.gif"
imag[43]  = "http://www.mrplanthire.co.uk/images/lift-scissor-4.gif"
imag[44]  = "http://www.mrplanthire.co.uk/images/lift-scissor-5.gif"
imag[45]  = "http://www.mrplanthire.co.uk/images/lift-scissor-5.gif"
imag[46]  = "http://www.mrplanthire.co.uk/images/lift-scissor-6.gif"
imag[47]  = "http://www.mrplanthire.co.uk/images/lift-scissor-6.gif"
imag[48]  = "http://www.mrplanthire.co.uk/images/lift-scissor-7.gif"
imag[49]  = "http://www.mrplanthire.co.uk/images/lift-scissor-7.gif"
imag[50]  = "http://www.mrplanthire.co.uk/images/lift-personnel-1.gif"
imag[51]  = "http://www.mrplanthire.co.uk/images/lift-personnel-1.gif"
imag[52]  = "http://www.mrplanthire.co.uk/images/lift-personnel-2.gif"
imag[53]  = "http://www.mrplanthire.co.uk/images/lift-personnel-2.gif"
imag[54]  = "http://www.mrplanthire.co.uk/images/lift-personnel-3.gif"
imag[55]  = "http://www.mrplanthire.co.uk/images/lift-personnel-3.gif"
imag[56]  = "http://www.mrplanthire.co.uk/images/lift-personnel-4.gif"
imag[57]  = "http://www.mrplanthire.co.uk/images/lift-personnel-4.gif"
imag[58]  = "http://www.mrplanthire.co.uk/images/button-recruitment.gif"
imag[59]  = "http://www.mrplanthire.co.uk/images/button-recruitment_.gif"

//
for (var i = 0; i < imag.length; i++) {
im[i] = new Image();
im[i].src = imag[i];
}
}
}
//
function roll(imgname,num) {
if (ns6 || ie4) {
if (document.images && imgname) {
imgname.src = im[num].src;
}
}
return;
}

function control_menu(id,mode,hide_select) {
if (id) {
if (mode)  value = 'visible';
if (!mode) value = 'hidden';
if (ns6) {
document.getElementById(id).style.visibility = value;
}
else if(ie4) {
document.all[id].style.visibility = value;
}
if (hide_select && mode)  control_menu(hide_select,0);
if (hide_select && !mode) control_menu(hide_select,1);
}
}

function control_tab(id) {
if (ns6 || ie4) {
// HIDE ALL
control_menu('DESC',0);
control_menu('SPEC',0);
control_menu('HIRE',0);
// SHOW "id"
control_menu(id,1);
return false;
}
return true;
}


// OPEN WINDOW
function open_window(target,win_name,win_width,win_height) {
if (win_width > screen.width)   win_width = screen.width;
if (win_height > screen.height) win_height = screen.height;
var offset_left = (screen.width - win_width) / 2;
var offset_top  = (screen.height - win_height) / 2;
win_height      = win_height - 100;
var win_cfg     = "status=1,scrollbars=1,resizable=1,width=" + win_width + ",height=" + win_height + ",left=" + offset_left + ",top=" + offset_top;
openwin         = window.open(target,win_name,win_cfg);
openwin.opener  = self; 
openwin.focus(win_name);
}