// JavaScript Document

var setGradient = (function(){

//private variables;
var p_dCanvas = document.createElement('canvas');
var p_useCanvas = !!( typeof(p_dCanvas.getContext) == 'function');
var p_dCtx = p_useCanvas?p_dCanvas.getContext('2d'):null;
var p_isIE = /*@cc_on!@*/false;


//test if toDataURL() is supported by Canvas since Safari may not support it

   try{   p_dCtx.canvas.toDataURL() }catch(err){
          p_useCanvas = false ;
   };
         
if(p_useCanvas){
    
    return function (dEl , sColor1 , sColor2 , bRepeatY ){
   
   if(typeof(dEl) == 'string') dEl = document.getElementById(dEl);
   if(!dEl) return false;
   var nW = dEl.offsetWidth;
   var nH = dEl.offsetHeight;
   p_dCanvas.width = nW;
   p_dCanvas.height = nH;
  

   var dGradient;
   var sRepeat;
   // Create gradients
   if(bRepeatY){
    dGradient = p_dCtx.createLinearGradient(0,0,nW,0);
    sRepeat = 'repeat-y';
   }else{
    dGradient = p_dCtx.createLinearGradient(0,0,0,nH);
    sRepeat = 'repeat-x';
   } 
   
   dGradient.addColorStop(0,sColor1);
   dGradient.addColorStop(1,sColor2);    
   
   p_dCtx.fillStyle = dGradient ; 
   p_dCtx.fillRect(0,0,nW,nH);
   var sDataUrl = p_dCtx.canvas.toDataURL('image/png');
   
   with(dEl.style){
    backgroundRepeat = sRepeat;
    backgroundImage = 'url(' + sDataUrl + ')';
    backgroundColor = sColor2;    
   };
    }
}else if(p_isIE){

p_dCanvas = p_useCanvas = p_dCtx = null; 
return function (dEl , sColor1 , sColor2 , bRepeatY){
   if(typeof(dEl) == 'string') dEl = document.getElementById(dEl);
   if(!dEl) return false;
   dEl.style.zoom = 1;
   var sF = dEl.currentStyle.filter;
   dEl.style.filter += ' ' + ['progid:DXImageTransform.Microsoft.gradient( GradientType=', +(!!bRepeatY ),',enabled=true,startColorstr=',sColor1,', endColorstr=',sColor2,')'].join('');
      
};

}else{

p_dCanvas = p_useCanvas = p_dCtx = null;
return function(dEl , sColor1 , sColor2 ){
   
   if(typeof(dEl) == 'string') dEl = document.getElementById(dEl);
   if(!dEl) return false;
   with(dEl.style){
     backgroundColor = sColor2; 
   };
   //alert('your browser does not support gradient effet');
}
}
})();