// JavaScript Document
function set_height(){
   var a=document.getElementById("bigall_left")
   var b=document.getElementById("bigall_center")
   var c=document.getElementById("bigall_right")
   var d
    if (a.scrollHeight<b.scrollHeight)     
   {
	   d=b.scrollHeight;
        
   }
   else
   {
	   d=a.scrollHeight;
	   }
	if (d<c.scrollHeight)
	{
		d=c.scrollHeight;
		}
		else
		{
			d=d;
			}
			
			a.style.height=d+"px";
			b.style.height=d+"px";
			c.style.height=d+"px";


}