function changeContentHeight_alt()
   {
      var height = window.innerHeight ? window.innerHeight : document.body.offsetHeight
      height -= changeContentHeight.vMargin
      if(document.getElementById("content").style)
         document.getElementById("content").style.height = height + "px";
   }
   //changeContentHeight.vMargin = 0

   //window.onresize = changeContentHeight
   
   
   
   
    	var changeContentHeight = function(marg)
   	{   		
      	    if(document.getElementById)
      	     {
   		var div = document.getElementById( "content" );

   		var divHeight = getViewportHeight() - marg;
   		
   		div.style.height = divHeight + "px";
   	     }
   	}

   

	var getViewportHeight = function() 
	{
		var height = 0;
		if( document.documentElement && document.documentElement.clientHeight ) {
			height = document.documentElement.clientHeight;
		}
		else if( document.body && document.body.clientHeight ) {
			height = document.body.clientHeight;
		}
		else if( window.innerHeight ) {
			height = window.innerHeight - 18;
			
		}
		
		if(navigator.userAgent.indexOf("Safari")!="-1")
			height = window.innerHeight;
			
		return height;
	};