// JavaScript Document
var firstClick=false;
var secondClick=false;

var ff;
var ss;
function checkTest(clickIndex)
{
	var selectedCheck=0;
	var stn = new Array();
	var selectIndex  = new Array();
	var counter=0;
	


	for(var i=0;i<8;i++)
	{
		stn[i]=document.getElementById("st"+(i+1));
	}

	for(var i=0;i<stn.length;i++)
	{
		if(stn[i].checked)
		{
			selectedCheck++;
			if(selectedCheck==2)
			{
				for(var j=0;j<stn.length;j++)
				{
					if(stn[j].checked)
					{
						selectIndex[counter++]=j;
						
					}
				}
				
				
			}
			if(selectedCheck>2)
			{
				
				if((clickIndex-1) < ff )
				{
				       selectIndex[0]=(clickIndex-1);
                       //alert("gggg"+ss+"sss"+selectIndex[0]);
						for(var i=selectIndex[0];i<=ss;i++)
						{
						if(!(i==ss))
						{
						stn[i].checked=false;
						document.getElementById("img"+(i+1)+"b").className="green"+(i+1);
						}
						}

						stn[(clickIndex-1)].checked=true;
						
						ff=selectIndex[0];
                    	ss=ss;
 
						return true;
						
				
				}


				if((clickIndex-1) > ss )
				{
				    selectIndex[1]=(clickIndex-1);

						//alert(ff+"ffff"+ss+"sssss"+selectIndex[0]+"00000"+selectIndex[1]+"111111111"+selectIndex[2]);
						for(var i=selectIndex[0]+1;i<=selectIndex[2];i++)
						{
						//if(!(i==ss))
						{
						stn[i].checked=false;
						//alert(i);
						document.getElementById("img"+(i)+"b").className="green"+(i);
						}
						}
						stn[selectIndex[0]].checked=true;
						stn[(clickIndex-1)].checked=true;

						ff=selectIndex[0];
                    	ss=selectIndex[1];
 
						return true;
						
				
				}

				if((clickIndex-1) < ss || (clickIndex-1) < ff )
				{
				        
				if(firstClick==false)
			   {  
                 //alert(firstClick+"firstClick");
				 for(var i=ff;i<=clickIndex-1;i++)
						{
						
						if(!(i==clickIndex-1))
						{
						//alert(i+1);
						stn[i].checked=false;
						document.getElementById("img"+(i+1)+"b").className="black"+(i+1);
						}
						}
                        firstClick=true;
						secondClick=false
						ff=clickIndex-1;
						ss=ss;
						//alert(firstClick);
						return true;
			    

			   }

			   if(secondClick==false)
			   {

			     //alert(secondClick+"secondClick"+clickIndex+"ddddd"+ss);
				 for(var i=clickIndex;i<=ss+1;i++)
						{
						
						
						if(!(i==ss+1))
						{
						stn[i].checked=false;
						//alert(i+"iii"+clickIndex+"ddddd"+ss);
						document.getElementById("img"+(i)+"b").className="black"+(i);
						}
						}
                        
						stn[clickIndex-1].checked=true;
                        ss=clickIndex-1;
						ff=ff;
                        
						firstClick=false;
                        secondClick==true;
						return true;
			 

			   }
						
						
						return true;
						
				
				}

				
			}
		}
	}


	
	if(selectedCheck<2)
	{
		for(var i=1;i<=7;i++)
		{ 		
			document.getElementById("img"+(i)+"b").className="black"+(i);
		}
		return;
	}
	
	if(selectedCheck==2)
	{
		
		for(var i=selectIndex[0];i<=selectIndex[1];i++)
		{
			if(!(i==selectIndex[1]))
			{
				document.getElementById("img"+(i+1)+"b").className="green"+(i+1);
			}
		}	
	}

	ff=selectIndex[0];
	ss=selectIndex[1];
	
}