// functions
matchColumns=function(){ 
     var divs,contDivs,maxHeight,divHeight,d; 
     divs=document.getElementsByTagName('div'); 
     contDivs=[]; 
     maxHeight=0; 
     for(var i=0;i<divs.length;i++){ 
          if(/\bcolumn\b/.test(divs[i].className)){ 
                d=divs[i]; 
                contDivs[contDivs.length]=d; 
                if(d.offsetHeight){ 
                     divHeight=d.offsetHeight; 
                } 
                else if(d.style.pixelHeight){ 
                     divHeight=d.style.pixelHeight;	
                } 
                maxHeight=Math.max(maxHeight,divHeight); 
          } 
     } 
     for(var i=0;i<contDivs.length;i++){ 
          contDivs[i].style.height=maxHeight + "px"; 
     } 
} 
window.onload=function(){ 
	preloadImages();
	if(document.getElementsByTagName){ 
          matchColumns();
     } 
} 

//rolls
function newImage(arg) {
	if (document.images) {
		rslt = new Image();
		rslt.src = arg;
		return rslt;
	}
}

function changeObtn() {
	if (document.images && (preloadOrderbtn == true)) {
		for (var i=0; i<changeObtn.arguments.length; i+=2) {
			document[changeObtn.arguments[i]].src = changeObtn.arguments[i+1];
		}
	}
}

var preloadOrderbtn = false;

function preloadImages() {
	if (document.images) {
		order_btn_01_over = newImage("images/order_btn_01-over.gif");
		preloadOrderbtn = true;
	}
}