function MM_findObj(n, d) { //v3.0
  var p,i,x;  if(!d) d=document; if((p=n.indexOf("?"))>0&&parent.frames.length) {
    d=parent.frames[n.substring(p+1)].document; n=n.substring(0,p);}
  if(!(x=d[n])&&d.all) x=d.all[n]; for (i=0;!x&&i<d.forms.length;i++) x=d.forms[i][n];
  for(i=0;!x&&d.layers&&i<d.layers.length;i++) x=MM_findObj(n,d.layers[i].document); return x;
}
function MM_swapImage() { //v3.0
  var i,j=0,x,a=MM_swapImage.arguments; document.MM_sr=new Array; for(i=0;i<(a.length-2);i+=3)
   if ((x=MM_findObj(a[i]))!=null){document.MM_sr[j++]=x; if(!x.oSrc) x.oSrc=x.src; x.src=a[i+2];}
}
function MM_swapImgRestore() { //v3.0
  var i,x,a=document.MM_sr; for(i=0;a&&i<a.length&&(x=a[i])&&x.oSrc;i++) x.src=x.oSrc;
}

function MM_preloadImages() { //v3.0
 var d=document; if(d.images){ if(!d.MM_p) d.MM_p=new Array();
   var i,j=d.MM_p.length,a=MM_preloadImages.arguments; for(i=0; i<a.length; i++)
   if (a[i].indexOf("#")!=0){ d.MM_p[j]=new Image; d.MM_p[j++].src=a[i];}}
}

// sepcifically created to test for numeric values
// in a text field named quantity
function validate_quantity(objForm) {
	if ( !isNaN(objForm.quantity.value) && objForm.quantity.value < 1 ) {
		alert ( "Please select the quantity that you would like!" );
		objForm.quantity.focus();
		objForm.quantity.select();
		return false;
	} else {
		return true;
	}
}

function submit(objForm) {
	objForm.submit();
}


// opens a window
function openWindow(file, session, bookmark) {
	if ( file == "colour.php" ) {
		// opens colours window
		window.open("colour.php","colour","toolbar=no,scrollbars=yes,width=340,height=400");
	} else if ( file.substring(0,8) == "info.php" ) {
		// opens size window
		// var location = "info.php#" + bookmark;
		window.open(file,"info","toolbar=no,scrollbars=yes,width=625,height=350");
	} else if ( file == "size.php" ) {
		// opens size window
		window.open("size.php","size","toolbar=no,scrollbars=yes,width=625,height=500");
	} else if ( file == "cart.php" ) {
		// open cart window
		fileName = "cart.php?PHPSESSID=" + session;
		window.open(fileName,"cart","toolbar=no,scrollbars=yes,width=780,height=500");
	} else if (file == "www.e-velocity.com.au") {
		window.open("http://www.e-velocity.com.au","evelocity");
	}
}

// tests to see if a custom size is selected from available sizes
// if so, opens a window which allows the user to enter their dimensions
function selectSize(list, session) {
	if ( list.value == "custom" ) {
		window.open("custom.php?PHPSESSID=" + session,"size",'toolbar=no,width=350,height=240');
	}
}



// open pic window
function popupPic(title, style) {
	var file = "popup.php?title=" + title + "&style=" + style;
	var name = style + "_popup";
	if ( style == '001' || style == '002'  ) {
		window.open(file,name,'toolbar=no,width=480,height=440');
	} else {
		window.open(file,name,'toolbar=no,width=400,height=520');
	}
}